Well, the Minnesota Vikings just continue to add piece after piece this offseason. Now, it appears that they've signed former Chiefs QB Matt Cassel. Cassel will be used in a backup role, but still has a solid arm if they need one.
On the other hand, the Packers aren't doing anything. They showed minimal interest in Steven Jackson and Cullen Jenkins, lost Greg Jennings, and still haven't made a single notable signing this year. They may still be the best team in the North, but they can't just continue to sit back and watch all their rivals build themselves up into title contenders.