Sorry if my suggestions were bad, i just thought of gameplay, not everything, that's why that was bad, although the drop dash being a mid-air X button ability being just a example, now thinking better, it's a bad one.
I also thought of making the FPS Counter have a higher frame limit, not that the current one is bad, but i think that 35 is a rather odd maximum for FPS limit,(btw that was not supposed to be a pun) so i think that making the limit be 50 FPS would be better, and also fit more with the nowadays games.I thought of holding C would be a sonic-only ability, the water running, i think that would be something helpful in places like GFZ 2 or DSZ 1/2, or even in CEZ 2, it's something simple, but useful. I forgot to say it only works once runspeed is achieved.