Would you like to see Pichu more or Mewtwo?
... Surely you're jokin'? I'd rather see Mewtwo than Roy or anyone else for 'Karp's sake. A viable Mewtwo? I can only image how fun that'l be. And imagine what sort'a new moves PMBR might cook up for Mewtwo, whose moveset is immense. The potential for an incredibly interestin' character is there. Mewtwo is practically a blank slate if they want t' do more than just improve 'em.
And since Roy came before Mewtwo, that might be a hint that if there're plans for Mewtwo (there better be), he's gonna be revamped in many ways.
... Obviously Pichu would have a gigantic revamp, moreso than even vBrawl characters. Otherwise he'd still be a cloneish joke, hurtin' itself or not. But I doubt it'd be anythin' too excitin' beyond the fact that it's somethin' shiny and new.
So I have been playing Roy lately in Melee
and his aerial game is pretty bad but his ground game is awesome. But Roy is able to transition from aerials to ground attacks pretty well so if they are giving him a good aerial game as well as a great ground game Roy is going to be a very balanced character.
Any ideas of a new Side B for Mewtwo?