My one, highly minor gripe with Mania is that I'm going to miss the insta-shield. I felt in S3K it gave a reason to play as Sonic over Tails or Knuckles because it allowed you to beat the levels that much faster if you had the skills and experience to use it properly (by deflecting projectiles, getting early hits on bosses, etc). I personally don't see the problem with double tap jump for insta-shield, down and jump mid-air for drop dash (IE mid-air spin-dash), and up and jump to get Tails to fly, and could personally manage the admittedly pointless, but cool as hell looking peel-out as well. That said, they've explained the reasons for what has been done, and I'm fine with it. The game is still fun as anything. Regarding the art style, yes I'd love a 2D Sonic game that plays like the classics and looks like the OVA come to life, but I'm also acutely aware that this game would then take years to develop, cost a fortune to make and possibly not make its budget back. Mania looks fantastic and the retro-ness of it is part of the charm. I was personally wondering if the game ran in 4:3 so I could play it on my CRT with a USB Saturn controller for the full retro vibes.