Well like you said even one hunter does feel OP. With my two lowbies that I have been working on they feel very OP. Only my baby locks feel even remotely as OP. I have an Orc for the 5% pet Damage that I will be speccing BM and a Troll for the +5 to bows that will be BM. I am debating adding a third hunter Tauren to the mix for Survival but hoenstly i think just the two in play will be EZ mode, considering that with the pets you same as have a four person group.