Sonic 4
For the Next Sonic game it should be called Sonic and 4 and be 2D, no vices, have different storys depending on who you use e.g Sonic, Tails, Knuckle or Amy and no voices. 2 or 3 acts per zone and a boss and Sub boss.
Who agrees?
http://www.youtube.com/watch?v=_73zjvAlEG0