I totally understand, the original version of flight had you look at a direction and it would push you in that direction but that didn't turn out as fun as I'd like, so I changed it to this version in extremis. Having Jump/Crouch be simple raising and falling would definitely have been a safer bet, although I feel like there ultimately must be a more fun version of that. Didn't have enough time unfortunately.
Oh well. I hope you otherwise enjoyed it ^_^