@Barry I saw the QTE comments at Joystiq's playthrough of it, though I took it with a grain of salt because they said "Longtime Sonic fans will be happy to hear that Takashi Iizuka is producing the game", lol.
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I am fine with all of the BOOSTING, for the most part it seems optional. For those who played Unleashed, they know you HAVE to boost in so many later sections it was ridiculous, but even then I was able to enjoy the game enough. Especially when I kind of forced myself to play through the game a second time, I enjoyed the game a huge amount more. In fact, I almost loved it even.
Everything I have seen of the classic Sonic stuff looks great, I can complain about stuff but I do not really think it effects the overall game much. If just this stuff is quality and has some of my favorite levels from the entire franchise's history, I am happy.
I am kind of at a loss of words at potentially some of the stuff we can see. Modern Sonic racing Metal Sonic in Stardust Speedway Zone... Classic Sonic in Speed Highway... Modern Sonic in Flying Battery Zone... Classic Sonic in Red Mountain... Modern Sonic in Chemical Plant Zone... Classic Sonic in Green Forest...
Honestly I would much prefer if it were all based off of the original trilogy and some of the handheld games (Triple Trouble 4 life!), but I would be so overcome with nostalgia by seeing new versions of stuff like City Escape that I have a hard time caring too much.
Only took Sonic Team 10 damn years to revisit classic levels again... Mario games do it all the time and are praised up and down for it, and much of those are not even that interesting looking.