There was an article posted about this very thing. The fact that Hankins is more of a run stuffer than someone who upsets the apple cart in the offensive backfield, he is only on the field for about 60% of the snaps. Hence, one of the reasons teams aren't throwing big money at him. According to the article, the top of the heap 3-techs need to be on the field for a minimum of 70% of the snaps and preferably more than that. From what I gathered by the article (and if I wasn't so lazy I'd look it up and post it), Hankins is kind of a situation player when the team is expecting a running play. He was not in a lot on 3rd downs, especially if it was more than 3rd and 2 where they expected a pass play.