This was overwhelmingly addictive. Good thing there's upgrades for angle forgiveness - I figured out that at higher momentum values you can just keep mouse pressed without moving it and it just keeps cranking. This feature probably saved me from some intense wrist pain, because otherwise I wouldn't be able to stop myself from cranking it manually for an hour :)
Honestly, really good mechanics design and progression system - it feels so rewarding.
Oh, and also I tried to max out gacha chance as much as possible before even drawing one, since I figured they'd get a lot more expensive as I drew them. In the end I only grabbed a couple before the game ended :) I thought the ones on skill check chance and momentum decay were the most useful to me.