Although we've all talked about seeing characters like Sonic and Tails in the next generation of Nintendo-exclusive games, like Mario Kart and SSB:M, are you really confident that Nintendo is gonna allow such cross-overs to go down?
Grant it, they are under a new administration and that Nintendo is letting 3rd-party companies develop their biggest franchise games (SEGA with F-Zero, for example), but I don't think that we will be seeing characters like Sonic and Mega Man with their own racers in the next Mario Kart game, nor will we see them in the next Smash game.
Yeah, it sounds overly pessimistic, but I really don't see it happening.