There is much more in this post than what is on the surface. If you take a look at assignments you will see the Cowboys CBs struggle much more on meeting their assignments in the first transition year to Kris Richards Kick-Step-Press technique.
Here's a quote from Anthony Brown,
"That's a huge change," said cornerback Anthony Brown. "Last year we didn't have a set technique, it was pretty much do as you please, whatever makes you comfortable. ....That's helping us be patient and it's really helping our feet. ..."
Last year was a transition year for the corners. The schemes, technique and identity of the defence is getting much more specific, and also much more disciplined.
Remember the reason why Ryan was jettisoned from the team? Think about what Garrett is showing his tendency towards.
"According sources inside the organization, internal reviews of Ryan weren't good; the Cowboys found that his schemes and philosophy at times were unsound. They also felt he was inconsistent in his attack, sometimes opting to blitz the house (thus giving up big plays) and others opting to rush only three (giving opposing QBs all afternoon to throw)."
"The
Browns guys told him Eberfluss was a detail-oriented guy who functioned as "Rob Ryan's brain," suggesting that Ryan's attention to detail waned, and he needed a meticulous guy like Eberfluss to do all the detail work for him."
I don't believe the Cowboys were looking to get rid of Eberflus. Richards by all early reviews seems to be a details oriented guy. Garrett wants discipline and detail in his coaching staff.
The identity of the defence is 4-3. Quick penetration into the backfield and into the pocket with press man/zone coverage to disrupt the timing of the passing routes.
This is a upfront solution to defending. Ragging on the safety position is counter intuitive to the scheme. If everyone does their job the safety has a very small zone to protect. This gives him a higher probability in making a play on the man or the ball.
This is not a 4 second scheme defence. If it goes beyond three seconds where the QB is untouched or significantly altered, then this scheme is in serious trouble.
What would make this defence really take off is a healthy in his prime Sean Lee. Having an ace in the hole like Sean would give you a field general who could negate the QB.
LBs like LVE and Jaylon would negate a TE and RB with their physical talent, but who plays chess with the QB?