I think Brockers was excellent this year. A great fit at 3-4 DE for Wade. The problem is it created a massive hole at NT when they did it. And with two smaller ILBs behind the NT it created some problems. Personally I would LOVE Vea or Payne drafted at #23 as I think it would help quite a bit up the middle.
I think it is at OLB and CB we are likely to see the most turnover. I think Barwin was brought in to help transition to the new defense with someone that understood it from Day 1 and could help the others. Webster as well. Well they have transitioned and now it is time to get better at OLB and CB. I like Robey-Coleman a lot in the slot and hope he is brought back but I would personally move on from Quinn, Barwin and T. Johnson. Just my opinion.
Offensively if you are looking at upgrading your worst starting position then it is probably Higbee at TE.