I've taken time to study coach's film and my conclusion: secondary has been pretty good. Someone else here (xWalker?) took the time to study it and concluded the same thing about the secondary.
Heath and Frazier are less than satisfactory but we will see more Woods and Awuzie (health permitting) in those roles.
Yes, the secondary now looks good enough.
Don't forget that Woods the Safety had to play slot CB against Denver and some snaps there in another game.
The secondary with Lewis, Brown, Scandrick, Jones and Heath is good enough if they resolve the other issues. They are working Woods/Frazier/Awuzie into the mix and some combo of those 3 will likely displace Heath at some point.
LB has been the biggest problem but hopefully Leey/Hitchens are back together the rest of the season.
The DL is probably a net plus with Irving back despite losing Paea. Even if Paea was still playing, he likely would only have played 1/3rd or less of the snaps now that Irving is back. They've often played both DTs as 3-techs in obvious passing situations anyway and Paea didn't play in the 3-man line.
I hate to pile on to one player, but when I review game footage, so many problems seem to involve Jaylon.
Jaylon's issue have been obvious in run defense but he has also been the help defender on many failed pass plays.
In 1 game I counted almost all of the receptions that appeared to be against Brown were actually due to Brown not getting inside help and most often the intended help defender was Jaylon. They had Brown playing outside leverage which means he must have help when the receiver breaks inside. I'm not sure how much of Jaylon's fails against the pass were physical and how much was mental.
I'm very optmistic going forward and my top worry is everyone staying healthy more than an lack of ability.
I actually think this defense will be better than last year's defense by the end of the sesson IF everyone stays healthy.