Well, the D was the dominant part of our team IMHO last season....many times they would come into awful situations that the offense had placed them in (most often a Grossman mistake) and more often than not....especially in the first half before they would be worn down....they would limit the damage the other team was able to inflict.
I think our D is good, but don't really consider them a dominant defense. Hopefully they will get better due to a couple of reasons:
1. Player additions, especially in the secondary
2. An offense that may finally be able to score more easily...thus providing the defense a cushion as other teams will need to play from behind and thus become more predictable in play calling.
Looking forward to a big year from Kerrigan and Orakpo....and hope Jenkins comes back and is able to resist further injury.