Hmmmmm....... I just don't know how the sprite work could change for the 3ds. Honestly, I prefer 3d models.
But gen 7, I can't think of anything else that should be added. How about a cool villain team that is awesome like team galactic. I know it's a stretch, but I'd like a game with like gens 1-4 if they can't fit every gen in a cartridge. Like I said, I know it won't happen, but it would be awesome.