No. NO!
Dammit, Sega, NO! NO! NO! NO!
You can't keep throwing "...Returning back to his roots" in my face! It's lost all meaning years ago, and it's not going to work! Especially when you keep adding in "speed-based gameplay" along with it!
It hasn't worked on me since Sonic Rush, and you're not going to sucker this guy, again.
The only, and I repeat, ONLY way you're going to get me to look so much at another Sonic game again, is through these things being promised:
a) Actual Momentum-based gameplay, like the older titles
b) Non-realistic Earth setting
c) limiting of "friends" (talking like no more than like Sonic, Tails, Knux and Vector, at most). Or hell, no friends at all, would be fine, too.
d) Eggman/Robotnik, along with Metal Sonic, are the main bad guys, and ONLY bad-guys. No more "evil demons" that are randomly found for some reason.
e) Super Sonic is available for casual, in-level play, after you collect all those damn emeralds.
f) Imaginative level design
If you can't promise me that, then, sorry, you're not getting my money for a Sonic game. Ever again. You leave that to your gullible fans and children's parents.