The 4th quarter issues on D are very much about the failures to develop any depth. For example, the utter incompetence of now dismissed Dre Bly or still-with-UNC Tim Cross has meant I have said very little about how poorly Tommy Thigpen develops talent. I believe that Gray and Echols have played more snaps than all other LBs in the country. That means we have 0 depth at LB. Our 2 starting LBs are #s 1 and 2 in the country in downs played.
Thigpen seems to me obviously better than Cross, and we still have 0 depth at LB.
The D staff Mack chose and keeps simply cannot get the job done. The D that staff puts on the field will never be up to par across an entire season. It always lacks depth, and it always has staters who make major mistakes.