NFL.com took on the task of raking the Top 10 rosters in the NFL based on talent. This is a no-win proposition since there are so many ways to break down talent on rosters. In this case, though, former scout Bucky Brooks states that championship teams need eight to ten blue-chip players on their roster, so that's the stake in the ground he uses to anchor his rankings. He also notes that rookies are not included since you really don't know how well they'll play in the NFL or how teams will use them.
Before I looked at the list of Cowboys, I tried to make my own mental list of who Dallas' blue-chip players would be and it was acutally pretty easy.