Hey there! Thanks for taking the time to write such an in-depth comment and provide feedback! The balancing issues were a twofold problem of 1) aiming to make the game very easy and very quick to beat (I assumed people would spend 5 mins or less per game) and 2) not really spending enough time playtesting it. It's clear that more time should've been given to it and that we might've gone a bit too aggressive on trying to make it easy :P The menu bug was something particularly fiddly and will be fixed in the next bug fix build haha - but yeah making a build in a week is not easy!
We did briefly look into a pixel perfect camera but as you said - it is a bit of a hassle, which is why we chose to not use it.
And of course! I'll made sure to play & rate your game! :p