As far as Sonic goes, I think they have enough characters to branch out into spin-offs that don't utilize the traditional game style. A Chaotix detective game featuring Marvel: Ultimate Alliance type gameplay and a few other old characters (Fang, Mighty, Ray) would be beyond nifty.
Actually, I've always thought this about Mario as well and have been secretly hoping for a "Mushroom Kingdom" franchise devoted to depicting the adventures of Mario's side characters, like Goombario.
Actually, I've always thought this about Mario as well and have been secretly hoping for a "Mushroom Kingdom" franchise devoted to depicting the adventures of Mario's side characters, like Goombario.