The coaches have limited input as to the acquisition of talent. Most of that is on the scouting structure up to the top. For the most part they have to work with the players given to them although they have some input.
Things have really evolved from when Jimmy Johnson and Jerry Jones arrived in Dallas.
Jimmy had just come from the collegiate ranks and had direct knowledge of most players as well as an established and talking relationship of most coaches in the Country.
Today's NFL Head Coach just finds it impossible to carry on a similar type of direct knowledge on players throughout the country. His coaching staff is hindered as well, keeping up with player changes and each week's opponent.
Now, Jason Garrett can't go to Jerry during the collegiate season, and tell him he needs Jerry's jet to evaluate several players at a single team's game. Jason is also limited in that he is not in that exchange of conversations, and is unable to just get on the phone and talk with a college coach to get his own feel.
Back when, Jimmy evaluated the given talent of a player, but actually had a personal feel of that player's motivation and how he would fit into the mix at Dallas.
For that kind of intimate as well as functional information on both collegiate and NFL talent, it now requires a very good and collected group within a team's scout department. That is why the current blend of experience and professional standards of the Cowboys' Scout Department is so important.
Things have changed since both Jimmy and Jerry first arrived in Dallas...