Reset transform stack?
In the course of writing a game, sometimes I make mistakes. That's fine, because I can just run my game in protected mode, reset some things, and start love.run again to recover.
The one error that gums the works in this system is the max stack depth error, which happens when I forget to pop something I pushed, and sticks around even after I call love.graphics.reset(). Since reset is useful without tossing the stack, maybe an extra function like love.graphics.clearStack() could help?