Aww! Thank you so much! Not a ton of people stick around for that long but I'm happy you're one of the few to make it to the end! :)
A lot of very insightful feedback here! I'll be releasing a new update soon that should adress most of the things you mentioned. Should be out by Saturday.
EDIT: Forgot to mention this, the Donet thing is a donation machine. Whether you get something or not is pure RNG, but filling it up multiple times will grant you a special chest in the forth level.