Here's what amazes me most: assuming health, and given the strong seasons Butler, Ryan and Chung have had, where are the weak points on this defense? What kinds of formations are they ill-equipped to match up with? And who are you yearning to upgrade among this 15-man core group?
DT: Branch, Brown, Hicks
DE: Jones, Ninkovich, Sheard
LB: Collins, Hightower, Mayo
S: McCourty, Chung, Harmon
CB: Butler, Ryan, Johnson
They're not all elite units, but the sheer completeness and versatility of that roster is pretty imposing.