This subject has been addressed partly in other post but I think that it needs to be pointed out again. When the fan base addresses exactly the same thing that opposing OCs see, then the coaching staff needs to pay attention.
1. The front seven is so concentrating on the QB that the RB has options.
a. They do naked runs around the ends with success.
b. They are easy passing targets out of the back field.
c. The LBers (except Lee) do not have the eyes (know how) to detect the running back moving without the ball.
d. JS needs to cook a little longer before playing NFL LBer.
2. The center of the front seven is the weakest of the defense.
a. The one tech is the biggest problem in the DL, there is no push of the pocket back to the QB.
b. No push means that the QB can step up (see Rogers) into the pocket.
c. The RB can see the openings and the options for a run. Pushing the OL back presents the best option for loss of yardage.
3. The secondary is never in a position to make plays. This is the single worst problem on defense.
a, When good QBs do the same thing and beat the secondary like dirty rug, then something is wrong with the scheme. This has been a problem for a while and the coaching staff WILL NOT CHANGE.
b. The soft zone is trash and should be trashed.
c. Other teams use combinations of tight zone and press man coverage. They make plays and turnovers.
4. Coaching staff does not do tactical changes during the game. This is the foremost reason why the Cowboys lose games at the end.
Summary: The coaching staff is old style and the game has pass them by. Players are in the wrong position. Doing the same thing and expecting different results. Talent alone is not good enough in today's NFL.
We have not even addressed the offense yet!!