Three important pieces currently missing from Dan Quinn’s Cowboys defense Quinn’s defenses have always had certain pieces in place to help him, not so much now. Every defensive coordinator has certain types of players that they need to make their defenses work. Those coordinators, whenever they go to a new team, look over the roster and have to decide whether what they have is enough or if they will need to work the free agency and draft angles to get what they need. With Dan Quinn coming to Dallas, he’s doing that as we speak and there are a few things that we can easily see are missing that he will need to get through free agency and the draft.