Excellent point by the OP. If Dak can effectively step up in the pocket these edge rushers can no longer just tee off on our Ts and run around them....if they do they just rush past Dak and take themselves out of the play.
The other concern to me is the lack of blitz pickup by this group. I counted at least 5 times yesterday where Dak and Zack were calling out the blitz, but it didn't even matter. This is on both A) the O-line to pick up the blitzers. B) Dak for not utilizing his hot routes. Seems to be the philosophy of the Cowboys is that they are going to dictate their offense to the defense no matter what. If they have a long developing play, Dak (possibly with direction from KM) isn't altering that at all despite the fact the defense may be bringing more rushers than blockers available. Everything with this offense seems so correctable, and that is the frustrating part. It's obvious what the issues are, but the i'm guessing there are deeper issues why we arent adjusting well.