@The Dude I agree with you about quarterback. I feel very confident in CT.
Also agree with you on addressing the kicking/punting/ST game. Looking good there.
My biggest concern is Inside Linebacker depth, and replacing the production of JoJo Doman.
No matter what anyone says, G Nelson is a DE and not a linebacker. I have watched the games over and over. He only lines up against an Offensive Tackle. Don't watch games like Purdue, Minnesota, Wisconsin because you won't notice contributions there.
The top 3 tacklers from last year - Reimer, Henrich, Doman. It's not even close after that. And LR and HH have to provide coverage in the flat (Like JoJo did as well). Can they take the punishment each week and remain healthy? I worry there isn't a lot of depth to keep them healthy and fresh. They are the most important part of the defense (DLine gums up the line, ILB have to make the plays. That is Chins defense. If they are being blocked or miss a tackle, safeties have to get involved there. And we've seen how that hasn't gone very well)