>>27859452>New animations with some specific to type, nature, ivs and whatnot.Nintendo wouldnt do that, if anything a simplified version of that.
Same goes for the rest of your post, if they do it, they wont do something as big as that, maybe generic textlines for pokemon, 2-4 animations that could relate to their levels of hunger/hapiness in pokemon amie, and not too much more.
As for the models, i´ll give you that, it would be a lot of work to do models for every pokemon in the overworld, as well as walking animation frames and such, i would probably also lag the game.