After the update, I've got me some ideas
Main characters
Ash Ketchum, wants to Catchem All
I find it very hard to believe he's going to get more Pokemon, given his team is already bursting. But for evolutions...
Krookodile-Confirmed in the trailers
Crawdaunt-After so long, Ash has finally gotten a Dark type. Why not get another?
Gabite-Never got to evolve in Sinnoh. I think it should
Predicted spot in the Unova Leauge-Top 2. Defeated by N.
Well, okay, Ash can have some more Pokemon. Might as well add new types.
Drifblim-Quite a unique Pokemon, that can serve as his new Flying type.
Metang-Because no-one will see it coming. Plus Metang is beast.
Iris. Her hair rivals Kemo in personality
Not sure what the revelation of her being the Champion will do. Here are some ideas
Fraxure-Axew wants to evolve. It would help pave way to other Pokemon
Deino and Lairon-A tie to the new game. Plus Deino is ADORABLE
Seviper-Its in the Dragon egg group, and it looks just plain awesome
Cilan, sexy boy and probably a ninja
If we're going by the "Stration Trio are the Shadow Triad" theory, the potential appearance of Team Plasma could play a huge part in Cilan's actions
Pansage-It's basically Cilan's Pikachu, so I doubt it will evolve
Zangoose-As a rival to Iris' Seviper.
Pawniward and Absol-If we're going by the Shadow Triad theory...
Rivals
Trip, aka Paul if he wasn't a d-bag
Unova Leauge Position-Top 4, beaten by Ash
Bianca, the Queen of Moe
Minicco-Too adorable to evolve
Jellicent-A female counterpart to Trip's. I don't see Ash getting one, so I gave it to Bianca
Musharna-It was her signature Pokemon in the games. Why hasn't it appeared yet?!
Mandibuzz-No real reason, just thought it would be a surprise
Unova Leauge rank-Top 8/16, beaten by Trip
Burgundy, proof that Cilan is evil
We all know what Cilan did to her. Memes never lie. And here are the Pokemon she'll get for her revenge
Banette-What better Pokemon to get her revenge than the living personification of vengeance itself?
Heatmor-Fire Pokemon to counter Cilan's Grass status.
Georgia the Dragonbuster
Vibrava-Know thy enemy, of course. Plus I'm a huge fan of this Pokemon
Walrein-Any Ice type would work. I chose this to be the bulk of her team
Team Rocket's rocking
Jessie, the Princess of Crime
Now that old Pokemon are part of Unova, she can use her stored Pokemon. And I can see others
Eelektrik-It's a staple for Jessie to use serpentine Pokemon. And Eelektrik is the closest Unova has. Plus the irony of using an Electric type will be
delicious
James, the Prince of Crime
Cofagrigus-If I'm going to see Ghetsis suffer a fate worse than death, we need Yamask to be able to mummify him
Maractus-Like Eelektrik, its a staple for James to have painful Grass types
Giovanni. A man so epic he knocked out Blissey in one punch.
As we approach something big, I can see Giovanni getting into the fight. Here are his Pokemanz
Being a Ground type trainer, he's brought a whole bunch of Ground types now seen in Unova. As for Meloetta, someone with as much power as Giovanni isn't going to be stopped by some twerps. WHAM! Team Rocket as a whole becomes a much grander threat
Team Plasma
N Harmonia, sex symbol of the Pokemon universe
Keep your pants on fangirls, and listen to this
Akuroma. We knew you were evil since the start
Ghetsis Harmonia, the most evil man in all of Pokemon
Yeah...we're screwed