What's the Jester King bug, exactly? Because as of now, there's some red text in Godot about him using a non existing animation even though the name is correct in the code. I assumed it wasn't a deal breaker but I should probably revisit that and try to do something.
Yeah, Punch Monkey might be the first "side quest" I guess because with Ricotto and Karoline, they were part of the main paths of progression.
Bonka is full of weird gimmicks and some work, others are "eh" like the spinning top.