Looking at the demos, the character distribution seems rather lopsided, giving Tails and Knuckles only one demo each. I don't know what the limits are for demos (if any), but a concept I had was to have Tails in all the Sonic 2 zone demos, Knuckles in all the Sonic & Knuckles zone demos, and the Sonic 3 zone demos get split evenly across all characters. Sonic would retain all the Sonic 1 zone demos, and I expect a few more demos would have to be recorded to even things out more since Sonic 3 and S&K get 3 demos each plus the special stage demo, while Sonic 1 and 2 each only get 2. In regards to the special stage, perhaps a demo of an S1 special stage as Sonic and an S2 special stage demo as Tails (while changing the Blue Spheres demo to Knuckles) would be nice. Additionally, it'd be a nice touch if the Bridge Zone demo was Sonic alone, instead of Sonic & Tails. Lastly, a really minor nitpick: the Angel Island demo still uses the Super transformation cutscene at the beginning of the level instead of the custom surfing cutscene that's seen in actual gameplay.