I'd just like to add my two cents by saying that I think exhaustion is fine just the way it is, and it'd be quite a shame to have that changed due to ignorant swing spammers. Beginner mode or whatever it ends up being called can just stress the fact that you can't just annihilate hordes and expect to come out unscathed. I really feel that this new focus on difficulty is taking the game in the right direction and the way it was always meant to be played, so please, by all means make it harder.