My "blueprint" for the D for 2015 is getting pretty simple:
1. Extend Revis and McCourty
2. Exercise 5th year options on Jones and Hightower, and look towards extending both.
3. Re-sign Chung and Ayers
4. See how Branch and Casillas develop, and re-sign them if they fill niches
5. Figure out how much Wilfork has left in the tank, and how to proceed with the DT position
6. Draft a versatile DE with explosiveness to add into the mix; Bud Dupree, Shawn Oakman, Dante Fowler and Shane Ray all deserve consideration
I'm hoping that Branch will shore up the interior run defense and that Casillas will provide the coverage LB that we have lacked. Ayers is shaping up to be another "chess piece" that BB can move around. Chung has vastly exceeded my expectations (as has Wendell on offense - 2 moves that I hated, proving once again how much smarter BB is than me).
A stud DE would allow Ninkovich and Ayers to both be used as "wild cards", lining up at both DE and LB, and providing critical depth and rotation.
There are a lot of things to be addressed here, and some developments to follow. But for working purposes, let's assume that 1-4 happens, that either Wilfork stays or is replaced by a FA (Knighton, Odrick, Fairley) and that the Pats draft a DE/OLB in the first round. Then our 2015 defense would look something like this:
DE: Chandler Jones, rookie, Ninkovich, Ayers, Moore, Buchanan.
DT: Wilfork/FA, Easley, Branch, Siliga, Jones, Walker.
LB: Mayo, Hightower, Collins, Casillas. Ninkovich and Ayers rotating at LB as well, and possibly also a rookie.
S: McCourty, Chung, Ebner, Wilson, Harmon. Ryan and Arrington could also get snaps at safety.
CB: Revis, Browner, Dennard, Ryan, Arrington, Butler.
That's 27 players, not including STers Chris White and Don Jones, but it gives a general idea. I still wouldn't mind bringing in a safety to compete with Wilson and Harmon for depth, or a LB/S hybrid.