Considering the fact that your call sign is Tar Heel 16, I understand why you would pick Greg Ellis.
I think you can start with the fact that he was drafted specifically for some of the reasons you just mentioned. At the time, the Cowboys were trying to fix an image problem and drafting High Character guys became important. We passed over more highly rated players, still on the board, such as Randy Moss, Keith Brookings, Kevin Dyson and even fellow UNC DE Vonnie Holliday (a better pure pass rush DE).
For the most part, Ellis has always been a team first guy. He settled for less money in order to help the Cowboys with the cap,
He has played any role asked of him. Strong Side DE, Weak Side DE and even DT in a 43. Nickle Pass rush specialist and now OLB in a 34. Always giving maximum effort if not always agreeing with the position move.
He leads by example as opposed to showing up in the papers with legal issues.
Couple to start.