Congratulations to Gus. He was a part of the Seahawks defense before Pete got to Seattle and impressed Pete enough to earn the right to stay. He took one of the worst defenses in the league and turned it in to one of the best in the league. If Gus is given a good GM to work with, I think he'll do very well and I wish him the best except when the Jags play the Seahawks.
As for the next DC, I have faith in the Seahawk front office to make a good hire. I'm sure that most defensive coordinators do better when they are given good players to work with so it won't matter who they hire because John Schneider has already given the next guy a lot of really good players to work with.
Here's to hoping we see some pressure on QBs next season.