None of us are in the locker room, but I believe that Levitre led by example on the field. Except when he had to play center and had difficulty snapping, Levitre was one guy who excelled during both feast and famine.
That said, I agree that his extension doesn't need to come now. In fact I'd be surprised if Buddy hasn't already pulled Levitre and Byrd aside to say "We want you to be Bills for a long time. Just hold tight and you'll be taken care of."