a Pokemon game that follows the story/campaign of the TV show, so involves all regions, all Pokemon, a different Pokemon league, a different 3D non turn-based battle style, a slight degree of player choice with plot points/dialogue but remain with the overall plot of the storyline, and NOT FOLLOW season 14 (as that has pretty much thrown the past 13 seasons off a cliff and into a bottomless pit!) a game for fans of the show from its origins!
also could add a multiplayer side to it, OR just have story and multiplayer campaigns separate with story campaign stuck to ash's Pokemon and have the multiplayer campaign start like all the gameboy versions where you start in [starter town] select 1 starter Pokemon and travel around from there.