I wish the movement was more floaty. It's frustrating when I just stop in mid air because I stop farting sideways. I feel like I should be able to float through the levels using momentum, and just use little farts to change direction. I'd like to see how it plays with reduced gravity and no air resistance.
Having said that, I like the concept. I managed to get all the stars, but I had to cheat and go backwards to get one on the second last level.