The hiring of Bates of HC would create stability for the defense, which has been sorely lacking the last few years. I'm sure Bates will promote one of his assistants that came with him from Miami as the next DC.
So now I'm very curious about who he has in mind for our next OC. Will we stay with some version of the "west coast"/GB offense? Will we go a completely different direction on our offensive schemes?
No matter what, if Favre returns he will need to learn a new offense -- whether it be just terminology or completely new scheme. Right now I don't think that would be a problem for Favre. When it comes to the west coast style, the OC should be constantly coming up with new plays that must be learned. No matter what, it will be a completely new playbook.
At this point I believe that Favre wants to win again and he knows the organization must make some changes to do get back to winning. The key to Favre returning is making decisions toward the Packers making a playoff run this season, not just 2 years down the road. If it's rebuild and wait time, then we may have seen the last of Brett.