I would have to agree that the arrows spray is pretty OP atm, for a skill that only takes 1 skill point in Way of the Survival it is still the strongest ability in end game and can still do considerable damage even without bow/xbow trained.
Don't get me wrong we all love destroying 3-4 mobs in a single blow, I just think there should be a slightly larger cost for using it, either more way of the survival or a requirement on bow/xbow skill.