Yeah, that was pretty strange. I do not know how they can miss something like that... Oh yeah, they forgot Sonic rolls! I heard somewhere that rolling actually slows you down too, like in Sonic Rush. Always more proof of retardation at Sonic Team...
Something that bugs me that I know they will not fix are the springs. First of all, touching them at all makes you use them (as opposed to just jumping onto it). Does not really seem like a problem, but it does not help when the springs always set you off onto the same path (pretend it is an invisible tube or something). If you press anything or move while they are bouncing you around Sonic will just fall down straight. Kind of embarrassing.