Mike McCarthy calls the changes to the Packers defense as "less scheme, more personnel," and it's a response to the failures of Dom Capers' defenses of the past.
The Packers could stand an upgrade over A.J. Hawk and Brad Jones at inside linebacker, and they just might have done so with the addition of Julius Peppers.
The Packers' defense needs a change next year, and won't have cap room or high draft picks to waste on the front seven. But a schematic change to Wade Phillips brand of 3-4 might be just enough to bring about the positional (and attitude) change this team needs.
Clay Matthews missed four full game, Nick Perry has missed five, and the Packers defense has struggled without both of them in the lineup at the same time.
Everyone has a theory as to what is wrong with the Packers defense. Perhaps all the theories are just symptoms of the greater problem: the defense is playing flat, reactive, and needs a change so disruptive that it is able to transform it back into the playmaking defense of 2010. C.D. Angeli resurrects his Kitchen Analogy to study it.
There's very little depth at safety in Green Bay, and beyond Morgan Burnett, there's not much experience either. As little as one injury at the position could be costly.