Sonic's trademark grin was introduced on the side of his face, so that's why Sonic's got anatomy-breaking side-mouth goin' on. That said, I don't really mind side-mouth, but I'd prefer his mouth in the center of his muzzle like in the Sonic Adventures. Only less spastic ala Sonic Adventure 1 and less square ala Sonic Adventure 2. Seriously, what was up with the square mouth. I'd also like the art style from the adventure days to come back as well, I always liked that style. I miss the days when game box art was original art and not 3D renders, I really do. EDIT for clarification: I mean the way Sonic was drawn as opposed to him being tall and lanky. Like this: I absolutely love that art style.