Hammer tank so that we finally have another blunt class besides Monk. Could even name it Berserker and add a lot of dot damage called "stun" damage or something where you have skills that add the stun dot (without actually stunning the enemy). Stun dot could also work to decrease the amount of damage the enemy does. But yes we really need a another blunt damage class and we know it wouldn't be a healer so the hammer tank makes the best sense.