GYM LEADERS:

Gym Leader #5: Norman

Type: Normal
Title: "A man in pursuit of power!"
Badge: Balance Badge

Town/City: Petalburg City, "Where people mingle with nature"
RSRS-EE
With Petalburg supposed to be the city where "people mingle with nature", I guess if they kept it relatively the same that's be fine. I'd like to see it look more like a city with taller building, but I would expect to see a lot of nature (or maybe a giant national park or something). There's really no buildings that stand out, the only importent places are the Gym and Wally's house.
Gym Puzzle: Not really a puzzle but a series of battles. To get to Norman you'll need to do at least 3 battles. Walk into a room, defeat the Gym trainer, door(s) to next room(s) opens, rinse and repeat till you get to Norman. Also each Gym trainer has a gimmick strategy but they only have one Pokemon so it's nothing to worry about.
RSRS-EE
Yeah, Norman's Gym needs a new puzzle. Being Norman's Badge is the "Balance Badge", how about something doing with scales and weights? Like there's a series of scales who's one side will create a path to Norman, but in order to walk across them you'll need to counterbalance the other side of the scale. What will you balance the scale out with? With the Gym Trainers! After you beat them they'll let you assign them to stand on a scale to help balance it out. To stick with the previous puzzle they could even be waiting in side rooms and you can choose which ones you want to battle.
Battle: Norman's Pokemon are gimmicky with his signature Pokemon being VERY powerful, however they have a drawback to them.
In Ruby & Sapphire he has two Slakings and one Vigorth, though in Emerald he exchanges a Slaking for a Spinda and Linoone. Spinda is weak and nothing really to worry about, it's gimmick is about annoying you. Linoone is fast with decent Attack and HP but nothing much else for it, but its gimmick is about maximizing that Attack in exchange for HP. Vigoroth has good high Speed and good Attack and Defense, it's gimmick is essentially having none being his main attacker. Finally Slaking is EXTREMELY powerful, having stats near that of MASCOR LEGENDARIES. Insane amount of HP and Attack; high Defense, Special Attack, and Speed; Special Defense is his only lacking stat. But it pays for this though as its gimmick has to do with its Ability.
Spinda's Ability is Own Tempo which prevents Confusion, which is kind of ironic though nothing you need to worry about. Linoone's Ability is Pickup which has NO in-battle effect, nothing to worry about. Vigoroth has Vital Spirit which prevents it from falling asleep, gets rid of a possible strategy for nothing to worry about for the most part. And finally we come to Slaking. Poor Slaking, it has legendary stats but pays for it by having the Ability Truant, which means it can only attack every other turn. This essentially cuts ALL its stats in half, and makes it a joke once you know how to battle against it.
Moves is where their gimmicks come into play. Spinda's gimmick is trying to Confuse your Pokemon with Teeter Dance or possibly with Psybeam (a Psychic-type Special Move) but will also try to trap your Pokemon in using one Move with Encore, finally using the move Facade as its main attacking Move when it has nothig else to do. Linoone's gimmick is with the move Belly Drum, a move which maximizes its Attack so that it's other moves can do a lot of damage: Slash (higher chance of critical hit), Headbutt (can possibly Flinch), and Facade (Power is double when afflicted with a Status Ailment). Vigoroth is the same in both versions. Aside from Encore it has attacking moves: Slash, Faint Attack (Dark-type Physical move that ignores Accuracy and Evasion), and Facade. Finally all of Norman's Slaking's are different. In Ruby & Sapphire he starts out with a Slaking that has almost all the same Moves as Vigoroth excapt instead of Slash is has Yawn to try and buy it some time. His "star" Slaking only shares Facade and Faint Attack but instead of Slash and Encore is knows Slack Off to heal itself and Focus Punch for a technically powerful physical Fighting-type attack. His Slaking is Emerald actually has more in common with his first Slaking, except instead of Encore it has Counter which will do double the damage done to it by a Physical attack.
Finally, in Emerald is Slaking is holidng a Sitrus Berry.
It's actually best to battle Norman with a Pokemon with high Special Attack and a powerful Special Move, also a Ghost-type won't really help you here except against Linoone. Spinda is easy to take down, and if you get confused or encore just remember that switching out fixes that. Linoone is completely walled by a Ghost-type, so if you're having problems with it that's one thing to consider. Vigoroth you'll just have to go fist-to-fist with it, just keep attacking and you'll be fine. As for Slaking, there's one strategy that you can use that works against them all: use Protect every turn it can attack and try to badly poison it with Toxic. That's a surefire way to defeat it. Otherwise, good luck!

Norman actually has a good team in Emerald though it can still be improved. First off, unless he's going to challenge you to a Double Battle (which would be interesting), there's no need for him to have a Spinda. And really, a Linoone? Replace those two with an Exploud and Zangoose. Actually, you can keep Linoone (though at lease replace its Pickup Ability with Gluttony and give it a Sitrus Berry) and instead replace Vigoroth unless they give it an Eviolite. Finally, for Slaking, give it it the moveset of the final Ruby & Sapphire Slaking except replace Focus Punch with Yawn to make it a real challenge. Actually, considering the massive movepools of Normal-types they could learn a who slew of attacking Moves of other types, but one problem at a time.


Gym Leader #6: Winona

Type: Flying
Title: "The bird user taking flight into the world."
Badge: Feather Badge

Town/City: Fortree City, "The treetop city that frolics with nature"

Above: Ruby & Sapphire
Below: Emerald

Now this place I'm most excited to see in 3D! It's a city which houses are treehouses connected by suspension bridges, think of all the neat stuff they can do! They can make it a "vertical city" by having home be layered on top of one another in tall trees which you access by suspension bridges and hanging ladders! I would actually say not to have a single building on the ground!
Gym Puzzle: This puzzle is a bit hard to explain in words but easy to understand when doing it. The puzzle involves turning turnstiles in a way which you can progress. The first two are easy as just going through them but quickly you'll come to one where you need to manipulate two and then a final one which involves three. Its not hard to figure out but you do need to plan your moves a turn ahead.
RSRS-EE
While not a bad puzzle, I think it the Gym could do with one that either fits the Gym's type of the city that its in. Hmm, maybe if they made the Gym into a tower (said tower being in the center of Fortree City) they can have the Gym being about using strong air currents to blow you upwards (after putting on a parachute suit). However there's pathways blocking your way up to Winona so you either need to walk to another place or move platforms to get up to her on the very top.
Battle: Winona has a pretty good and balanced team in both versions, so you better be ready for her.
While in both versions she uses a Pelipper, Skamory, and Altaria, in Ruby & Sapphire she uses Swellow while in Emerald she uses a Swablu and Tropius. Pelipper is a Water/Flying that has a high Defense, good Special Attack, and decent Special Defense. Skarmory is a Flying/Steel that hase CRAZY high Defense, good Attack, and decent Special Defense and Speed. Swellow is a Normal/Flying which very fast with good Attack. Swablu is also a Normal/Flying but isn't really anything to talk about, its defensive but being a pre-evolution it only has decent defensive stats at best. Tropius is a Grass/Flying that has high HP, good defensive stats, okay to decent offensive stats, and low speed. Finally Winona's signature Pokemon is Altaria, a Dragon/Flying-type that has high defensive stats, good speed, and decent offensive stats and HP.
Swellow has the Guts Ability which increases its Attack by 50% when afflicted with a Status Ailment (so don't do that, not that you normally would). Pelipper and Skarmory both have the Keen Eye Ability which prevents Accuracy reduction and as of Gen VI the opponent's evasion boosts, in other words nothing to worry about. Tropius's Ability is Clorophyll that will double its low Speed to high Speed in sunlight, that's something to note. Finally Swablu and Altaria have Natural Cure which cures any status ailment they have upon switching, which is something the AI rarely so overall nothing to worry about.
Swellow can get annoying as it has Double Team which can make it hard to hit, can hit first using Quick Attack, has Aerial Ace so it can never miss, and finally Endeavor incase you don't knock it out has is left with a little bit of HP. Pelipper can be just as annoying as it likes using Protect and then Supersonic to confuse your Pokemon, finishing its moveset with Water Gun and Aerial Ace. Skarmory may have three attacking moves in Fury Attack, Steel Wing, and Aerial Ace, but it too likes to annoy you by lowering your Pokemon's accuracy with Sand-Attack. Tropius, as you may have expected, has Sunny Day to not only activate Chlorophyll but to also use Solar Beam without needing to charge and heal half of its max HP when using Synthesis, oh and it has Aerial Ace. Swablu doesn't intend on lasting long so will use Perish Song to try and take your Pokemon out with it and putting up a Safeguard to help Winona's other Pokemon, it having Mirror Move and Aerial Ace to maybe get an attack in before it goes down. Finally Altaria will probably start off with a Dragon Dance to increase its Speed and Attack by 1 stage so that it can attack quickly with moves like Dragon Breath, Aerial Ace, and Earthquake.
And in Emerald both Skarmory and Altaria are holding an Oran Berry.
While normally you can bring an Electric- or Ice-type to a Flying-type Gym, for Winona maybe it's a good idea to bring both. As you can see, her Pokemon love to mess with you though if you plan accordingly you can deal with them all quickly, but if she starts gaining speed you could be in trouble, ESPECIALLY if Altaria gets off a Dragon Dance or two.

Another pretty tight team. Use her Emerald team but swap out that Swablu for her Swellow. Give Skamory its Sturdy Ability and maybe consider making Tropius's Ability Solar Power as I don't think a Speed increase will help it that much. And you know what, let's take advantage of new battle styles and make Winona's battle a Sky Battle!... okay, maybe not.

GYM LEADERS:

Gym Leader #7: Tate & Liza

Type: Psychic
Titles: "The mystic combination!"
Badge: Mind Badge

Town/City: Mossedeep City, "Our slogan: Cherish Pokemon!"

Above: Ruby & Sapphire
Below: Emerald

I'm interested to see what they decide to do here. Obviously they're going to put a lot of focus on the desing of the Space Center and maybe Steven's House, but what does that mean for the residential houses and the island as a whole? I wouldn't be surprised if they increase the size of the island to give more room to the Space Center.
Gym Puzzle: Mossdeep Gym's puzzle actually had the biggest change out of all the gyms as it's a completely different puzzle instead of a slightly changed one. In Ruby & Sapphire it was a slider puzzle where there are tiles which slid you in the direction they were pointing. In order to get to Tate & Liza you needed to not only navigate through the sliders put also hit switches that would change the direction of connecting red slider tile that's preventing you from progressing. In Emerald they made the Gym more Double Battle themed. The slider puzzle are still there but instead of sliding you they're instead positioned in a 2x2 square and move what's on them (statues and trainers) whenever you press a tile that matches the color of the slider. Honestly, even if you look at a picture its hard to explain how it works, it's really a puzzle you need to see in action in order to understand.
RSRS-EE
So, will either of these puzzles return in Omega Ruby & Alpha Sapphire? Maybe, I like the idea of the Emerald puzzle trying to put the player in constant Double Battles though I think the puzzle itself wouldn't look that interesting in 3D. With a psychic and possibly space theme, maybe they could do something with gravity, like a puzzle that revolves you travelling around an anti-gravity room in order to go above obstacles and occasionally bumping in between two trainers who were waiting for that exact moment to do a double battle. Of course that sounds a bit too much like my Fortree Gym puzzle idea.
Battle: Tate & Liza are the only Gym Leaders who has ever challenged the player to a double battle in any region. Because of that their battles are a little different than a normal Gym battle and those unprepared will get knocked down.
In Ruby & Sapphire they only have one Pokemon each, their signature Pokemon Lunatone and Solrock. Both having decent Speed and HP, Lunatone focuses on its Special stats while Solrock focuses on its Physical stats, though even then they're only good. In Emerald Tate gets a Claydol and Liza gets a Xatu. Claydol has high defensive stats and okay to decent stats everywhere else. Xatu has good Speed and Special Attack and equal to decent stats everywhere else. Though don't let any of what I say fool you, remember this is a double battle and their Pokemon covers the weakness of the other one.
Lunatone, Solrock, and Claydol all have Levitate as their Ability so they can't be hit by Ground-type attacks, which is good for Lunatone and Claydol as that would have been on of their weaknesses being part Rock-type. Being part Flying-type, Xatu is alreadt immune to Ground-type attacks so instead gets to have a different Ability, Synchronize which afflicts the opponent with Burn, Paralysis, Posion, or Badly Poison if Xatu is afflicted with any of those status conditions. Overall their Abilities are nothing to worry about, just don't use any Ground-type moves.
Going to Moves, Lunatone and Solrock have the same moves in both all versions. Lunatone has Light Screen and Calm Mind to set up it and its partner, Hypnosis to put the opponent to Sleep, and Psychic which is powerful coming off its Special Attack. Solrock is more offensive, it'll use Sunny Day so that it can power-up its Flamethrower and Solar Beam, and when that fails it still has Psychic, however due to Solrock's low Special Attack these Moves don't hurt as much as Lunatone's Psychic. In Emerald you first need to get through Claydol and Xatu before you can battle Lunatone and Solrock. Claydol also will set up a Light Screen to halve the power of your special attacks, and then it'll go on the offensive with Earthquake, Ancient Power, or Psychic. Xatu meanwhile makes sure Solrock is always ready to ebe used as it too has Sunny Day, but also has Calm Mind to power-up itself, Confuse Ray to Confuse your Pokemon, and finally a strong Psychic. It's those Status Moves that'll mess you up the most.
And as you may have expected, in Emerald their Lunatone and Solrock are holding Sitrus Berries.
There are a few strategies you can employ. You can knock out all of one's Pokemon so that the other is fighting alone, thus are able to prey upon their weakness which the other would normally be covering. You'll obviously want to use Dark- and Ghost-types, though most of their Pokemon are weak to Water- and Grass-type moves (except for Xatu) and Claydol and Xatu are both weak to Ice-types. Also using a Pokemon who's immune to status ailments or is holding a status ailment curing Berry will also help, not to mention if you can also get a Pokemon who can change the weather to Rain. Finally, though Xatu fast it isn't the fastest, so if you can outspeed it you can outspeed their entire team.

The Pokemon they have are alright, though Solrock's Moves could use some work. Sadly it doesn't get any physical Fire- or Psychic-type Moves, so I say replace its entire moveset with Stone Edge, Earthquake, Acrobatics, and... how about useful status move like Reflect, Sandstorm, Will-O-Wisp, or Trick Room? I'd personally go with Trick Room, their Pokemon are rather slow.

Gym Leader #8: Wallace (Ruby & Sapphire)/Juan (Emerald)
RSRS-EE
Type: Water
Titles:
Wallace: "Artist, and lover of water"
Juan: "The Gym Leader with the beauty of pure water!"
Badge: Rain Badge

Town/City: Sootopolis City, "The mystical city where history slumbers"
RSRS-EE
Another city I'm excited to see redesigned, they could really make Sootopolis City look interesting by having mutliple layers of houses against the crater walls and you can run around in a big circle if you want just like in Lumiose City.
Gym Puzzle: This one is simple to explain, step on all the ice tiles once to create a staircase to go to the next ice tile puzzle, rinse and repeat 3 times. Don't worry, there's pretty much only one solution and its easy to figure out, only the third one may give you some trouble. Though you may want to mess up at least once on the third one as, if you step on a tile you already stepped on (shown by the ice tile cracking) you'll fall to the basement were all the trainers are.

Above: Ruby & Sapphire
Left: First Floor - Right: Basement
Below: Emerald

"Hey, isn't this more of a puzzle for an Ice-type Gym Leader than a Water-type Gym Leader?" said everybody. Yeah, I think whoever's the 8th Gym Leader will be getting a new Gym Puzzle. But of what? Well being Wallace and Juan are performers (and showoffs) whatever their puzzle will be it'll be a spectacle to be sure, something nice to see in 3D. Maybe they can put on a water show creating shapes out of water and you need to travel on these shapes of water. Going over arches of water, being shot up on water jets, however you get there you'll put on quite a water show doing so.
Battle: Though they're two separate trainers, they actually share 3 of their Pokemon (guess they must belong to the Gym?). But don't think that means they don't have a style of their own or will be an easy battle.
Let's start with the Pokemon they both share: Luvdisc, Whiscash, and Sealeo. Luvdisc has good Speed, okay Special Defense, and nothing else, don't even know why they're even using it. Whiscash has high HP and decent stats everywhere else except Speed which is barely okay. Finally Sealeo is similar to Whiscash except less so. But they each have two of their own Pokemon. In Ruby & Sapphire, Wallace uses a Seaking and Milotic. Seaking was a mixed bag, good Attack, decent HP and Special Defense, and the rest were okay. Milotic was his signature Pokemon and it was a beast with high HP and Special stats, decent Speed and Defense, and barely okay Attack (like it even used it). Juan took a different approach in Emerald, having a Crawdaunt and Kingdra. Crawdaunt had very high Attack, good Defense and Special Attack, okay HP, but low Special Defense and Speed. His signature Pokemon was Kingdra which had very good special and physical stats and its HP and Speed wasn't too bad either.
Luvdisc, Seaking, and Kingdra all have Swift Swim which doubles their Speed in Rain... a lot of good that does them. Though Seaking had Rain Dance, their only other Pokemon which had Rain Dance was Whiscash. Speaking of whom Whiscash has Oblivious which means it can't be infatuated, NEXT. Sealeo has Thick Fat which halves the damage of Fire- and Ice-type moves, like you were going to use any in the Water-type Gym. Milotic has Marvel Scale which increases its Defense by 50% if afflicted by a status ailment, so don't do that. And finally Crawdaunt has Hyper Cutter which prevents its Attack stat from being lowered by the opponent (just attack...).
Would you be surprised if I told you that Luvdisc, Whiscash, and Sealeo all have the same moves no matter what version? Luvdisc has been assgined as the annoyer as it knows Attract and Sweet Kiss to infatuate and confuse your Pokemon, respectively, while it attacks with Water Pulse and Flail if its HP gets low enough. I already said Whiscash has Rain Dance, but it also has Amnesia to increase its Special Defense and when its done bulking up it'll attack with Water Pulse and Earthquake. Sealeo will probably try to trap you in a move with Encore and then go on the offense with Body Slam, Aurora Beam, or Water Pulse. Seaking will try to keep the rain going with its Rain Dance as it either chips aways at you with Water Pulse and Fury Attack or try to 1HKO you with Horn Drill. Milotic can not only attack with Water Pulse, Twister, or Ice Beam, but it also can heal itself with Recover! Crawdaunt focuses on hindring you, first using Leer to lower your Pokemon's Defense and Taunt to keep it from using Status Moves, and then goes on to use a powerful Crabhammer or a Water Pulse. Kingdra prefers to make itself annoying, when its not attacking you with Water Pulse or Ice Beam it'll either use Double Team to make itself hard to hit or Rest to fully heal its HP and cure any status ailment it has before going to sleep for 3 turns. However...
Instead of a Sitrus Berry, Kingdra has a Chesto Berry to give it one free Rest!
Just bring Electric- and Grass-types. Just makes sure to use the Grass-types on Whiscash, the Electric-type on Sealeo, and hammer away on Kingdra till it faints.


Now being I don't know who they'll use as 8th Gym Leader, I'll just do an overall criticism. First, GET RID OF LUVDISC AND SEALEO! I'd suggest replacing them with a Huntail and Gorebyss. Second, either dedicate yourself to a Rain team or not, not all your Pokemon need Water Pulse, especially those who are physical attackers. Finally, Juan, why is Kingdra, a Gen II Pokemon, your signature Pokemon? I know you're old but get something like a Ludicolo, Wailord, or a Relicanth!

Elite Four #1: Sidney

Type: Dark
Room: A brown tiled floor with a gray-and-dark brown Pokeball symbol and two pits lined with lights on eitherside.

Going with the pit theme, how about changing Sidney's room to being a hanging battlefield over a black and featurless pit with only the paths leading to the exits and a few giant chains keeping the platform from falling. How's that for dark?
Battle: Just as the type he masters, Sidney has plenty of tricks up his sleeve that can make a battle with him very frustrating.
In all versions he has a Mightyena, Cacturne, Shiftry, and Absol; but in Ruby & Sapphire he has a Sharpedo and in Emerald he has a Crawdaunt. Being an early rought Pokemon, Mightyena isn't all that strong having a good Attack stat okay stats everywhere else. Cacturne has very high offensive stats, but unfortunetly that's all it brought to the table as it has low stats otherwise. Shiftry has good HP and offensive stats with decent Speed though its defense is lacking. Skipping Absol for last, Sharpedo has very high Attack and high Special Attack & Speed, though pitiful defenses. I already talked about Crawdaunt with Jaun's team. Finally his signature Pokemon, Absol, has very high Attack and then only okay Special Attack and Speed.
They all have different Abilities so sit down. Mightyena has Intimidate which will lower your Attack stat by 1 stage so keep that in mind if you're using a physical attacker. Cacturne has Sand Veil (in a sandstorm it raises user's Evasion by 20%, decreases opponent's accuracy by 20%, and grants user damage immunity from sandstorm if they didn't already have it) and Shiftry has Chlorophyll (doubles Speed in sunlight), the problem with this is that none of these Pokemon HAVE weather changing moves so they're completely useless here. Sharpedo has Rough Skin which damages your Pokemon if they use a physical move that makes contact, so what out for that. Crawdaunt has Hyper Cutter that prevents decrease in Attack like you'll ever do that. Finally Absol has Pressure that'll make a move use up two PP each time its used instead of one, so if there's a move you want to keep using I hope you brought Ethers or Leppa Berries.
Mightyena and Cacturne have the same attacks in all versions. Mightyena has Crunch and Take Down for main attacks, but also knows Sand-Attack to annoyingly lower your accuracy and Roar to annoyingly forcefully switch your Pokemon. Cacturne's main attacks are Faint Attack and Needle Arm, but also has Cotton Spore to lower your Pokemon's Speed and Leech Seed to slowly drain HP little by little. Shiftry in all versions knows Extrasensory (main attacking move, ironically you can completely wall Shiftry with a Dark-type in Emerald), Double Team (raises user's evasion), and Swagger (increase target's Attack, but makes them confused); however in Ruby & Sapphire is knows Fake Out (a move that has higher priority, does a little bit of damage, and make the opponent Flinch. Note you can completely wall Shiftry in both version with a Sableye who's immune to both Psychic- and Normal-type attacks) but in Emerald switched it for Torment (prevents the opponent from using a move twice in a row. Guess it can be useful, but switching out cures it). Sharpedo knows Surf, Crunch, and Slash as attacking moves and also has Swagger to keep on annoying you. Crawdaunt chooses to use Swords Dance to increase its own Attack and on an offensive with Strength, Facade, and Surf. Finally Absol in all versions knows Swords Dance, Slash, and Aerial Ace; but in Ruby & Sapphire it knows Snatch (copies opponent's stat changes, possibly useful but probably not) but in Emerald switch it for Rock Slide, for some reason.
In all versions Absol is holding a Sitrus Berry.
Bring a fast and/or bulky Fighting-type and you'll have no problem. At most you may want to send out a "fodder" Pokemon to take Mightyena's Intimidate, but you really shouldn't have any other problems.

While alright, it could use improvements. First I'd say either remove Cacturne or Shiftry and replace it with a Sableye so he has type diversity (that or add in more Dark-types to the Hoenn dex so he can use one of them). Next, now that Dark-type Pokemon have a lot more moves, each of his Pokemon should have a Dark-type attack (like Night Slash for Absol). I'd also use Sharpedo over Crawdaunt since its faster and will prove a bit more of a challenge. Also Cacturne should know Sandstorm and Shiftry know Sunny Day to take advantage of their Abilities (you can also give Rain Dance to Sharpedo just to make it's Surf stronger). For Abilities I'd replace Absol's with Super Luck (as well as giving it other moves with high critical hit ratios).

Elite Four #2: Phoebe

Type: Ghost
Room: a purple tiled floor with a red-and-black Pokeball symbol and two pits with a broken brick floor underneath.

The thing about Elite Four rooms is that they all have a similar yet different theme. Since Sidney was a pit, how about we make Phoebe's a graveyard with a heavy supernatural purple mist clinging to the floor, the only path visible being the area around Phoebe and the paths to the exits. Spoooooky!
Battle: Phoebe, Phoebe... *sigh* Well she uses Ghost-types so we all know how tricky they can be, but... let's just get into it.
Phoebe has the same team of Pokemon in both versions: 2 Dusclops, 2 Banette, and 1 Sableye. Dusclops has very high defensive stats but everything else is lacking especially HP and Speed. Banette has very high Attack, decent Special Attack, and okay stats everywhere else. Sableye has decent to okay stats in offense and defense though low HP and Speed (thinking about it, they should just add more Dark-types and give one to Sidney).
Dusclops has Pressure so that's something to keep an eye on, Banette has Insomnia (they can't fall asleep) so thus nothing to worry about, and Sableye has Keen Eye (prevents Accuracy decrease and as of Gen VI opponent's evasion increase) so still nothing to worry about.
*Sigh* Even though she pretty much uses the same team, ALL of them are different even if that difference is a single move. Dusclops #1 knows Curse (for Ghost-types, in exhange for half of the user's HP it afflicts the opponent with a curse that makes them lose 1/4th of their HP each turn), Confuse Ray (as if Curse wasn't annoying enough), and Shadow Punch as its main attacking move in both versions; In Ruby & Sapphire it knows Future Sight (in 2 turns switch in to a Dark-type if you're not already using one) and in Emerald it knows Protect (gotta make use out of that Curse). Banette #1 knows Faint Attack, Shadow Ball, and Will-O-Wisp (burn your Pokemon if they aren't a Fire-type. Remember burn halves the Attack stat if you're using physical attackers) in both versions; in Ruby & Sapphire is knows Spite (lowers PP or opponent's last move used. Nothing that big, but keep it in mind and carry Ethers and/or Leppa Berries) and in Emerald knows Grudge (if user faints due to an opponent's attack, that attack loses all its PP. It might be something to watch out for). Banette #2 switches things up by only sharing two moves between versions: Psychic and Shadow Ball; in Ruby & Sapphire it knows Toxic (to badly poison your Pokemon) & Skill Swap (switches Abilities, so you may want to be careful what you send out against it) and in Emerald it knows Thunderbolt and Facade for some reason. Her lone Sableye also only share two moves between versions: Faint Attack and Shadow Ball; in Ruby & Sapphire it has Psychic & Attract (it's female, so male Pokemon be careful) and in Emerald knows Double Team and Night Shade (does direct damage equal to user's Level, which is 50 so not too bad). Finally her last Dusclops knows Ice Beam, Earthquake, and Shadow Ball in all versions; in Ruby & Sapphire it has Confuse Ray but in Emerald it has Rock Slide for some reason.
In all versions her last Dusclops is holding a Sitrus Berry.
Bring a fast Dark-type and you should be set. You may want to switch out if you get hit with a Curse but otherwise you can just storm on through.

Get rid of a Banette and replace it with a Shedinja. As for Dusclops, either evolve one of them to a Dusknoir and give the other an Eviolite or replace the remaining Dusclops with a Froslass. With that settled, I guess they're mostly okay movewise (they all at least have a Ghost-type move and another move so they aren't walled). I'd actually change Sableye's Ability to Stall and teach is Payback so it could at least do a considerable amount of damage.

Elite Four #3: Glacia

Type: Ice
Room: A white tiled floor with a aqua-and-gray Pokeball symbol and two pits with a floor made of cubes of ice underneath.

I imagine ice sculptures everywhere that isn't around the area Glacia is or the two paths leading to the exits. Cool.
Battle: I already complained about Glacia's team before, so let's get on with it.
2 Glalie, 2 Sealeo, 1 Walrein, all versions. Glalie stats are all equal and thus only decent overall. Sealeo has good HP and okay defensive & special stats. Being it's evolution, Walrein is like Sealeo but better.
Glalie has Inner Focus that prevents Flinching and her Sealeo & Walrein has Thick Fat which halves Fire- and Ice-type attacks.
Glalie #1 has Ice Beam, Crunch, and Light Screen (halves the opponent's Special Attacks for 5 turns, can be a bit annoying) in all versions; in Ruby & Sapphire it has Hail to slowly chip away at your non-Ice-types HP and in Emerald it has Icy Wind to lower your Pokemon's Speed. Glalie #2 knows Hail, Ice Beam, and Shadow Ball in both versions; in Ruby & Sapphire it knows Crunch and in Emerald it knows Explosion (so try to knock it out fast). Sealeo #1 knows Hail, Body Slam, and Ice Ball (Ice-type version of Rollout, let your nightmare of Whitney's Miltank come back) in all versions; in Ruby & Sapphire it knows Surf and in Emerald it knows Encore (forces you to use the same attack the next few turns, so in other words use an attacking move). Sealeo #2 knows Hail, Blizzard, and Attract in both versions; in Ruby & Sapphire it knows Dive and in Emerald is knows Double-Edge. Finally Walrein knows Surf, Body Slam, and Sheer Cold (a OHKO move, so make sure your Pokemon's level is above it!) in all versions; in Ruby & Sapphire it knows Blizzard but in Emerald is opted for the more reliable Ice Beam.
Finally Walrein in all versions is holding a Sitrus Berry.
Remember that Fighting-type you used for Sidney? Works here too. Electric-type Pokemon also work though surprisingly Fire-type aren't as useful since most of her team are part Water-type.

Now, it's not Glacia's fault she had to use this team, the Hoenn Dex only has the Snorunt and Spheal family line as normal Ice-type Pokemon (the only other Ice-type being the Legendary Golem Regice). Now Froslass is going to be added into the Hoenn Dex so she can replace one of her Glalie with that, but they need to add more Ice-types to the Hoenn dex if anything so they can replace her two Sealeo (not even an Eviolite is going to help them that much). Also if you're going to run a Hail team, switch Glalie's and Walrein's Ability to Ice Body as Inner Focus and Thick Fat aren't really helping them. Also I'd replace any Ice Beams with Blizzard since, if you're going to be in hail, might as well take full advantage of it.

Elite Four #4: Drake

Type: Dragon
Room: A red tiled floor with a yellow-and-crimson Pokeball symbol and two pits with rows of spikes underneath.

Being an old sea captain, how about we make Drake's room be a boat simulated to be in a middle of a ferocious storm with loud claps of thunder that sounds like a dragon's roar? RAWR!
Battle: A type so powerful that a new type needed to be added just to counter it, Drake uses Dragon-types and they're as tough as they sound!
In all versions Drake uses a Shelgon, Altaria, at least one Flygon, and a Salamence; but in Ruby & Sapphire he uses a second Flygon while in Emerald he has a Kingdra. I talked about Altaria (with Winona) and Kingdra (with Juan) before so we'll skip over them here. Though a middle evolution, Shelgon has high physical stats but that's pretty much it. Flygon is sort of like Glalie, in all stats its decent excpet in Attack and Speed which is high. Finally Salamence, being a psuedo-Legendary, has very high offensive stats, high Speed, good HP, and decent defensive stats.
A whole range of Abilities here. As always, Altaria has Natural Cure and Kingdra has Swift Swim (but no Rain Dance). Shelgon has Rock Head which prevents damage from recoil moves. Flygon has Levitate meaning you can't hit it with Ground-type attacks, so it's safe from Earthquake. Salamence has Intimidate so that's something to keep in mind if you have Physical attackers.
Shelgon knows Dragon Claw, Rock Tomb, and Protect in all versions; in Ruby & Sapphire it has Crunch but in Emerald they remembered about its Ability so gave it Double-Edge. Altaria knows DragonBreath and Dragon Dance in all versions; in Ruby & Sapphire it knows Take Down & Refresh (cures itself of a status ailment) and in Emerald knows Double-Edge and Aerial Ace. The Flygon he has in all versions is his 1st Flygon in Ruby & Sapphire: it knows Flamethrower, Crunch, and DragonBreath in all versions; in Ruby & Sapphire it knows Sand-Attack and in Emerald knows Earthquake. His second Flygon in Ruby & Sapphire knows Fly, Dig, DragonBreath, and Sandstorm so it can be a bit annoying. Meanwhile in Emerald his Kingdra knows Surf, Body Slam, Dragon Dance, and Smoke Screen (because we just can't get away with messing with accuracy and evasion). Finally his signature Pokemon, Salamence, knows Flamethrower, Dragon Claw, and Crunch in all versions; in Ruby & Sapphire it knows Fly and in Emerald it knows Rock Slide.
And of course, Salamence is carrying a Sitrus Berry in all versions.
Up till now Drake probably was the biggest threat. Usually you would use Ice-types to deal with Dragon-types but Kingdra is neutral to Ice-type moves and a few of his Pokemon know moves Ice-types are weak againt. But, as I said, recently a new type was added to deal with the all powerful Dragon-types: Fairy! With a Fairy-type, not only are they immune to their main STABS but also does Super Effective damage against all his Pokemon (and Dragon-types don't usually learn Poison- or Steel-type attacks). So if you bring a Fairy-type you'll pretty much be set, though it better be fast as they still know other moves and if they get off a Dragon Dance they'll not only be faster but be able to hit harder.

First, they need to add in another Dragon-type family line so he can replace that Shelgon (I would even say let him use a Pokemon that came after Gen III like Druddigon or, better yet, Dragalge). Also they got to add in Poison- and Steel-type moves to the movepools of at least the Dragon-types that Drake uses. Poison Fang, Poison Jab, Iron Head, Iron Tail, Metal Claw, and Steel Wing are some options that I can see his Dragon-type using. Finally the only Ability change I would suggest would be for Kingdra, changing Swift Swim to Sniper if it's not going to use Rain Dance.

Ruby & Sapphire Champion: Steven

Type: Steel (& Rock)
Room: A purple and gray platform in a middle of a room with gray and purple wall tiles that leads to a pit shining with light.

For the Champion you want their room to be big and grand, so how about a rising platform with a spiral staircase you need to climb until you reach the top. And of course, depending on who the Champion is, it'll be decorated accordingly. For Steven with can have intricate metal works with all kinds of glistening stones lining the platform.
Battle: Prepare for a long battle as, on top of being the Champion, Steven's Pokemon are naturally defensive though don't think they can't give back why they can take.
Steven's first Pokemon is Skarmory which we talked about with Winona. Cradily is next with high defensive stat and decent HP and offensive stats but lacking in Speed. Steven has a Claydol which I already talked about with Tate & Liza. There's an Armaldo with very high Attack, high Defense, decent HP and special stats, but lacks in Speed. Next is the Pokemon that SHOULD be his signature Pokemon, Aggron, which has monstrous Defense, very high Attack, though not much else. His actual signature Pokemon, Metagross, has very high physical stats, good special stats, and decent HP and Speed.
Another range of Abilities. Skarmory has Keen Eye which we talked about, Cradily has Suction Cups which prevents it from being switched out (thus nothing to worry about as who uses switching moves in the main game?), Claydol has Levitate, Armaldo has Battle Armor which protoects it from citical hits (guess you'll just need to knock it out normally), Aggron has Sturdy making it immune to OHKO moves and be left with 1 HP if it was at full HP (thus can be quite annoying unless you weaken it a tiny bit first), and Metagross has Clear Body making it immune to stat decreases useb by the opponent (just attack it!).
Skarmory knows Steel Wing & Aerial Ace as main attacking moves, Toxic to badly poison your starting Pokemon, and Spikes to hurt any non-Flying or Levitating Pokemon that comes out after. Cradily's only status move is Confuse Ray and everything else if offense: Sludge Bomb, Ancient Power, and Giga Drain (which remember that heals it a bit). Claydol will probably attempt to put up a Light Screen (halves your Special attacks) and Reflect (halves your Physical attacks) and then attack with Earthquake and Ancient Power. The rest of his Pokemon are ALL offensive. Armaldo knows Slash, Ancient Power, Aerial Ace, and Water Pulse. Aggron knows Earthquake, Dragon Claw, Thunder, and Solar Beam. Finally Metaross knows Meteor Mash, Psychic, Hyper Beam, and Earthquake.
Metagross is carrying a Sitrus Berry.
Recently Steel-types lost their immunity to Ghost- and Dark-type Moves so now Metagross is even easier to take care of withough havinh to worry about losing your Fire-type to one of Steven's Pokemon Rock- or Ground-type moves. Of course that doesn't mean much to his other Pokemon, but luckily half of them are weak to Fighting- and/or Water-type moves. The only one not effecting by either of those is Skarmory which a Fire- or Electric-type move will gladly deal with. You may also want to use Special moves instead of Physical to get around his Pokemon's higer Defense stats.

I think his Pokemon World Tournament team in Black 2 & White 2 fixes most of his problems. Of course he wouldn't be using a Excadrill or Archeops so let's talk about Claydol and Skarmory. For Skarmory give it Sturdy and it good to go. As for Claydol, I'd say replace it with either another Rock-type, maybe a Relicanth to also give him a Water-type.

Emerald Champion: Wallace

Type: Water
Room: A blue and gray platform in a middle of a room with gray and blue wall tiles that leads to a pit shining with light.

Steven may have metal world and gems, but for Wallace the railing can be an aqueduct with small waterfalls lining the platform. Be the Champion be either Steven or Wallace, their room will be shiny to look at!
Battle: Just because Wallace's Pokemon has two types which are very easily to exploit doesn't mean he'll knock you around if you aren't prepared!
Wallace still uses a Milotic and Whiscash, but he has 4 new Pokemon from his Gym Leader days. Wailord has monsterous HP and good offensive stats, but low everything else. Tentacruel has very high Special Defense, high Speed, and decent stats everywhere else except for Defense. Ludicolo is almost the same with high Special Defense, good Speical Attack, and decent stats everywhere else. Finally Gyarados has very high Attack, good Special Defense and HP, and decent Defense and Speed.
Wallace also varied his Pokemon Abilities this time. Wailord has Water Veil to prevent it from getting Burned, Tentacruel has Clear Body, Whiscash still has Obvious, Ludicolo now has the Swift Swim, Gyarados has Intimidate, and his Milotic still has Marvel Scale.
Wailord has Rain Dance to start with and then goes on the attack with Water Spout (more HP it has the stronger this move is), Double-Edge, and Blizzard. Tentacruel then tries to weaken your team with Toxic and can attack with Hydro Pump, Sludge Bomb, and Ice Beam. Whiscash still has Amensia and Earthquake but now also knows Hyper Beam and Surf. Ludicolo's strategy uses Double Team to make it hard to hit and Leech Seed to heal off damage when you do hit followed by attackin with Giga Drain (for more healing) and Surf. Gyarados has Dragon Dance and after that it unleashes Hyper Beam, Earthquake, and Surf. Finally Milotic keeps Recover and Ice Beam but now can use Toxic and Surf.
And finally, Milotic has a Sitrus Berry.
Electric and Grass-types, that is all. Well, except for Ludicolo, but its weak to Flying-, Poison-, and Bug-type attacks so take your pick. Just hit hard and fast and you should have no problem.

Improvements, well, first you have to go through their Moves and give them ones which match their stats better (for example, Gyarados probably would do better with a Waterfall or Aqua Tail instead of a Surf). Also give Rain Dance to Ludicolo since both of its Abilities involve it being in the rain, they realized that coming the Pokemon World Tournament! Speaking of which, they could also take some inspiration from that as it not only uses only Pokemon from Gen III and before, it mostly has Gen III Pokemon!