Protip for Spykid: Use imgur for hosting images to post in threads. Here is the image he tried to post:
EDIT: Here's some actual feedback.
Let's start by looking at this screenshot:
First, why aren't you using the moving platform version of the Super Ring item box? If you use it with the LINK object, you'll have a Super Ring item box that moves with this platform, and leaves behind no residue. It also looks a lot nicer.
Second, your platform collisions are screwy, so if I try walking into the platform, Sonic starts warping up a bunch of times.
As for the rest of the demo, I was actually bored by it. No hazards at all, just some annoying quick reflex platforming.