I could see that with the assistants, using that as a way to get rid of some without firing them. But I have a harder time believing he's holding out for more power in the building, as it seems he already has quite a bit. The moves to get Stafford, Von, OBJ, etc., were all things he had to sign off on. What more power is there for him to gain?
I'd also add that it wouldn't help him given that he already does too much anyway and needs to delegate more rather than assuming additional responsibilities.