I would love him to evolve his gible but I doubt it since one of the main characters in the show (Cynthia) already has a garchomp and her garchomp is the star of the show whenever she shows up. I wanted Ash to catch an axew and evolve it since I doubt Iris will evolve her's.
I would like to ash evolve Palpitoed and scraggy because i think it would be really cool if he had a seismitoad on his team and scrafty would be a excellent addition to his team since its dark and fighting and then scafty would look even cooler than scraggy looks
While his bulbasaur is my favorite of all his pokemon i sort of wish it evolved so he would have a powerhouse Venusaur that he would call on for high end battles but seems its not gonna get the chance to battle again since its good showing in the BF. and since may's bulbasaur seemingly evolved into a Venusaur out of the blue i doubt they want another main character to have one.
If ash would catch a new pokemon and evolve one i'd love to see him get a tangela and end up with a tangrowth. could be a powerhouse with the right treatment.
I don't think evolving would've really suited Bulbasaur, Squirtle, or Buizel, so I'm happy with them. I'm undecided on Totodile though. I like its funny, hyperactive personality but if it had evolved it could've added a whole other dimension to it. The Johto starters in general disappointed me a bit actually. I hate Corphish. I never found Corphish to be funny or even remotely interesting, would've preferred Ash get a Mudkip/ something else, but maybe evolving into Crawdaunt could've gone some way to redeeming it, who knows? I'd have liked to have seen Gible evolve, but I doubt it'll happen now. Would've loved Ash to have ended up with a Dewott, Emboar and Serperior by the end of the Unova journeys but I think it might be too late now. As an egg Pokemon, we could probably see Scraggy become Scrafty at some point, Phanpy-to-Donphan-ish. I'd have loved Ash to have got a Seismitoad but again, I think it is too late in the day now. I was also excited for a potential Ash and Trip trade to get Gigalith and Conkeldurr respectively but alas.
Which Pokemon should ash catch?
Again, massive list. First few that come to mind though, I always wanted Ash to catch a Clefairy like Isamu Akai's. Would've been a refreshing alternative to Pikachu, personality wise, and would've also been quite funny. Always a believer in Ash getting the starter Pokemon, so I wish he'd have got a Torchic, Mudkip and Piplup (hate Corphish and Torkoal, like Buizel though). Would've liked Ash to have got a Bagon as well, maybe the one from AG188?
A Gabite would suit him so much. As would his own Larvitar, if he still had him. I miss him so. Garchomp is mostly off the charts since its "rightful owner" as most have said is Cynthia and she is too much well beloved to be shadowed by Ash. Too bad nothing indicates he would get his prized Gible back. In a change of pace, the pokémon he *shouldn't* catch would be none of the starters; but that seems impossibly low due to all the advertisement it would generate for X/Y.