Eh... I'm sorry if this got adressed before, but I'm currently too tired to read through 100+ pages.
How do you think Ivysaur will attack? B moves are fine, as he can do the regular vine whip/bullet seed/razor leaf, etc. But for A moves?
Ivysaur is a quadraped, meaning no punching or kicking(and his jumping probably sucks). His tail is also really short. That leaves his head. Now, he could headbutt people, him upsmash could be someting like Bowser's, his >tilt could be like Pikachu's... but where do we go from there?
I think that maybe some vines come out of him and slam people for some A moves for some disjointed hitbox ownage. Of course, that's what his grab'll have to be. And... really, that's all I can think of.