Much has been said about how Vrabel likes to play zone, and Gonzo is a man corner, but they played a lot of man in the playoffs when the competition was at its toughest. I do kind of think that playing so much zone actually saved Gonzo's body from getting too beat up. He's prone to getting hurt but he generally had a fine year and he was 100% locked in playing his best football of his career when it counted. So, we may get frustrated at times when they're paying big bucks to Gonzo but yet in zone during the regular season, but there is likely a method to the madness.
For what it's worth, more zone defense may help in run defense as well, since that could be a bit of a sore spot this year.