The only one I am not concerned about so far is Lord Byron, he's been solid. The entire D has seemed out of sync but so has most of the NFL that I have watched.
I do not think this is going to be a great D but it will be good enough if the O can keep up the pressure and not get too dependent on the D.
I am not sure this D has gotten that embarrassment in LA out of their system because that was one of the worst D performances in Cowboys playoff history and they all played parts in it. They need a "come together" game and NO and GB are just what the doctor ordered.
I think the other thing that is affecting our perception is the coverage of the team. With these contracts, a holdout and a brand new OC, all anyone wants to talk about is the offense. That D might be feeling a little neglected and unappreciated but they've probably been better than we're thinking, just not as good as the offense.