So, how do you find real success in improving your roster in NFL free agency without signing any outside free agents? Go address a couple of your biggest roster needs via trades. At least that is the plan of the Dallas Cowboys so far this year as they have now acquired both Brandin Cooks and Stephon Gilmore in trades that cost mere spare change in draft picks. We won’t know the actual impact until the regular season rolls around, but to find another offseason that looked this smart and aggressive for the team, you have to go back all the way to the 20th century.