Kid Chameleon, I've always wanted a 3D remake or sequel. too bad Sega can't decide what their own best games are, or they might have lasted longer in the console wars. also, Comix zone! That one doesnt even have to be 3D, just update the graphics and music, maybe add more levels and story, and BOOM, instant hit! Alex Kidd, too! a nice 3D freeroaming adventure game in where you punch blocks and badguys, would be great...
only thing is, if sega decides to remake these, would they just overthink it like thay always do and screw it up?