Give him something to do if Jaina's off becoming Lord Admiral or whatever. Plus if I recall, Auric wasn't part of the Silver Covent, but was Alleria's second in command on Draenor, and thus in charge of her remaining forces in Outland. Those troops should have come home by now. In fact, Outlands, to be honest, should be evacuated if at all possible of all friendly species and the portal closed. Yes we lose Nagrand.....but its a dead world. An we have access to a living Draenor anyway.