My one concern with the decisions around the secondary echoes yours: many moons ago, Tramon Williams became one of the highest paid Packers after playing solid football for a limited stretch. Some people bemoaned that signing was premature (in hindsight, we could liken it to Brad Jones contract- flashing potential at a position where we needed quality of play, developed from within, etc), but Tramon was good value for his deal. He fell off somewhat towards the end of his time, but he was reliable and consistent for the most part without breaking the bank. Paying him more than he deserved up front in the early stages meant the back end of his deal was also more affordable, which was smart structuring- TT has been good along this line (think Woodson's deal- stupid money in year one made the remainder of the deal a tremendous bargain).
I would have liked to see Davon House offered Tramon's salary to stay. That gives us scheme familiarity and something more than potential on the outside. Joe Whitt has done really good work developing young talent in our secondary, and I think you have to trust that he gets Davon to play solidly like he has Sam and Tramon. If it's a whiff, then it's a whiff, but based on our track record, I like the probability that he performs well and delivers good value on the whole.
That said, it looks like TT felt the offer he got was past his value to the team. We'll see if that's true pretty quickly- CB tends to be one of those positions where a fatal flaw becomes apparent in about 15 minutes.
While Randall and Rollins appear to offer flexibility within the scheme, it seems to me that the best flexibility that maximizes the capability of our defense is in a player like Charles Woodson who can give you dominant reps from multiple spots. To a lesser degree, Peppers is like that because of his insane athleticism- he can play DE, DT in passing situations, OLB, ILB. He was a subtle yet important reason our defensive backbone stiffened last year. I don't know how quickly rookies can deliver within Capers' scheme. It's one more reason I'd hoped that House would give us a constant at an important position so some of out better players can be variables within the scheme other teams have to fret over, rather than be constants that are easier to prepare for because we've got variables (read: weaknesses) we have to cover for...