Limit Break Dancing
My DM (and wife) is a historian, so this feels very weird to me."Historical" is a stick to beat the DM over the head with.
But I do agree with you about the Gunslinger...that rate of fire is ridiculously fast, especially if he's using a flintlock. It's still a lot more reasonable than all wounds and injuries healing themselves completely after 8 hours of sleep, but no DMs have been bludgeoned over it (that I know of.)