Pretty good post and I agree with most except,
Schobel is not an excellent d-end. He is average and TD vastly overpaid him.
Mike Williams has pro bowl potential but it is questionable if he will ever reach that status. Also you don't draft a right tackle at #4 and pay him that kind of money. We won't even discuss his injuries, and lack of commitment.
He has missed on some early d-line draft picks that should be key contributers at this point, but are not. { Denny, Anderson,Edwards }
Other than that He has done a pretty good job. But he is not the best gm in football.