Those are good ideas but (i dont mean to sound hostile) they are all related to another charater in some way it would be fun to see a completly different peron or thing in the mix. Not that i dont like your ideas, they're pretty good. Very good.
While I'm not opposed to a new character beeing introduced (heck I would still welcome Waluigi), I do think that the cast is already quite big as it is for this kind of game, not to mention that it would be even harder to give every character their own stages.
Long story short:
I wouldn't mind a new character, but if it means that some characters have to be relegated to cameos like Dribble & Spitz in Touched, than I would rather not have anyone new since the already existing ones already get much fewer limelight than they deserve.
Exept it isn't.To be fair, relegating existing ones to cameos to introduce new characters is at least better than doing so to introduce recolours or family members with remixed sets of microgames. I'd rather have had new characters instead of say, Jimmy T's family from Touched, Jimmy P from Smooth Moves or Pirate Wario from Game & Wario.
i'd like it if orbulon's friend came but he was evil, and when you were playing his mini9gam,es everyone you win destroys a bit of his plans to destroy diamond city or something, warioware could use a true villainIdeas: Mona's brother? Dribble&Spitz's helpful mechanic? Orbulon's alien pal who came to remind him of his invader duties, but ends up becoming just like him?