That's not all of things operate at the X-office currently. I have a friend who actually work at the X-office as an assistant editor and while obviously they can't tell anything major, from the little they told Hickman is the one that pushes and approves of all the current x-titles and the general direction of the X-men (with editorial high up obviously getting the final say). Hickman position is pretty much like Dave filoni's at Lucasfilm.