My more detailed first impression: This class is superfluous. Clerics and Inquisitors are superior in every way to the class and while you can argue that the Cleric is more focused on being a caster, it is impossible to ignore that the Inquisitor seems to be better at about everything relevant (damage, skills, tanking, utility) to the Warpriest.
This class needs a complete overhaul to find a place which makes its existance necessary. So far as I can see, the only reason to play it is because you disagree with the flavor of playing an Inquisitor.
I agree with this whole-heartedly. To my knowledge, there is nothing that a Warpriest can do better than a Paladin, Inquisitor or Cleric.
In my eyes, the niche of "divine beatstick" has already been filled.