jimmysilverrims
Smash Ace
I'm not suggesting having one for each series, It's just Sakurai said he had an interst in having more villians and I am guessing which one will get in. And yes, I too feel that every boss from evey franchise will not be playable, although I think some of them that are villians, but are "larger than life" (ie. Andross, Mother Brain, Medusa etc.) could be included as a kind of "Final Boss" like Bowser was in Adventure Mode, although this time the final boss is dependant on the character you are playing as.