The "object slows down if you're close to it" thing is an intuitive, yet surprisingly versatile mechanic, and the first world shows it off well. The burgers did nothing when collected...and that's great! It's fun to collect things for the sake of collecting them, it doesn't have/need to be anything more than that. I also liked the title/end screen art. Overall, I did have fun with it.
If you are looking to improve it, here's my gripes with it: The second world is kinda lame, as the optimal play is to just wait until the walls turn off and the in-game visuals in general are kinda ugly.