After Greene - Severson, the rest of the defenders are more third-pairing quality or low-end second-pairing. After that, is Merrill and kids who haven't proved anything.
I'm ok with the Larsson trade simply because we won heavily on value and added a high-end forward that we lack in the entire system. However, it gutted our defense. We're trusting Severson to replace Larsson and while he did do that in early 2014-15, it's still a massive risk to take.
I just don't think there is enough quality depth, but on the bright side, the offense is much better and Schneider is Schneider. If Greene goes down though, that's not going to be pretty.