And BTW, Dallas has been looking to fix that side of the ball for years and Garrett has always scape-goated the defense.
They blamed the defense during Wade's tenure, while Garrett's offense was declining in red-zone production year after year to bottom in the league, multiple TOs that they blamed Romo for, while Garrett was absolutely clueless on how to field a running game.
When they fired Rob Ryan, the excuse was the lack of TOs and not providing Garrett's offense with more chances. They actually drafted Mo Claiborne to shore up the defense and leveraged multiple picks. After that year, Jones probably had enough, particularly since Callahan came here and Romo's new contract came into play and he forced a change in doing things by having Romo in game-planning meetings. That year Garrett tried to sell it as an organizational decision, just like playcalling duties being stripped from him, but it was Garrett that didn't have Romo involved and it was Garrett that promoted his brother to passing game coordinator in one year from TE coach, while they tried to force the latter's pet project Kevin Ogletree into the offense.
They then switched from 3-4 to 4-3, because again, Garrett's scapegoat was the defense. Kiffin was an absolute disaster here so they went with Marinelli. Dallas actually targeted Sharif Floyd as their number 1 pick, meaning defense again. Marinelli said no, he doesn't fit the scheme. The next year they had three defensive players targeted before Martin, meaning again they targeted defense.
We've been a disaster the more control Garrett has yielded.