Reggie Bush ?? Wes Welker ???
I'm sure the suitors of those trades were quite happy with the results & didn't have such myopic and linear thinking as you do
Many a super bowl champion have made such trades.. just look at the Saints roster of Vilma, Shockey, and a few other guys on that championship team for just a small sample of the many roster acquisitions of super bowl teams.
and many good teams, not just super bowl ones.. I don't think the Falcons regret trading for John Abraham from the Jets, as just one of a plethora of examples. You know, the guy that our 1st overall pick, Jake Long, gets taken to lunch against and can't ever block