Lang and Burnett have been fantastic, Burnett has been one of the biggest keys to our defense so far this year, without him it wouldn't look good.
All you need to do is look at the running game to see how well Lang has been doing, sure, it doesn't hurt to have 2 NFL caliber running backs as apposed the the 0 they had for most of the season last year, but run blocking and pass protection has looked the better than in many years.
Wynn has been an excellent surprise. I'm hoping that maybe So'oto can help out with the OLB spot, hopefully sooner than later. Maybe CMIII's hammy is holding him back a bit? He seems better vs the run than he does against the pass, though he has gotten a lot of pressure, just not getting the sacks.
I think Peprah will be fine, he's just gotta get accustomed to that starter role once more. I still say Peprah is a better safety than Woodson, so taking Woodson away from what he does best just isn't a good idea.