One might assume that such a strategy situation benefits the defending division winner most, but I actually think it is the Packers that could benefit. They are a young team (meaning they're more likely to improve internally), they lost a lot of close games last year (showing they're not terrible, and the close games could swing the other way this season), and they have the best quarterback in the division by far, heading a potent offense (meaning their primary "need" for improvement is the defensive front seven--the offensive passing game is good, and the defensive secondary is good).
But as a Viking fan, I'm hoping the addition of Sage Rosenfels significantly affects the team. He should be better than either Tarvaris Jackson or Gus Frerotte, and the team went 10-7 with them at QB. With an easier schedule (the Vikes play the NFC West rather than the NFC South), this Viking team is capable of improving its record.