Hey! Super glad to hear that you like the game! And yeah, we did think about certain things like adding attacks to the first boss but time crunch became a big factor at the end. XD
As for the quit button, the main menu does have more options if you press left and right. You think I should make it so it's up and down instead? I'm unsure if we can update games after the game is submitted to the jam so I don't know if I can change that right now but I will for sure! :P