The moon was easier than any of the other yoshi coin sublevels, which i thought was interesting.
Beyond that, i don't even know what I can say about this. I've never seen anything like this, and I dont think I will for a long time.
The first section was really slow (and almost boring) because of waiting for the spinies to be thrown/having to wait for the next one if you messed up, but once it got going it got good.
e: i was worried it wouldn't have a climactic ending. Glad you proved me wrong