Yeah, they could end up feeling pretty similiar under the same gameplay systems. Makes me wonder even more at what they'd do to differentiate them. Rather similiar for characters who have absolutely nothing in common!
As for the Buriki chara's, I dunno how many of them would make the transition well... Silber and Guy made the transition very well, but would I want Rob Python over Heavy D!, Vanessa, Axel Hawk, or Rick Strowd?
Oh, and I'd be cool with more old guys in the game, haha. Still wanna make the "Ojiisan" team, the natural evolution of the Oyaji team!