I like the idea of the Pro Shop, and pub in both Milwaukee and Madison. They could also add a "mini-HOF" as well. Rotate some of the memorabilia from the past into each one, on a rotating basis, to give people the feel that they'll get in GB, if they get there.
Also, use those locations to promote excursions by bus, to GB, and a complete immersion in the Packer legacy. The objective is to create interest that will spread, and those that go will spread the legends.
I've always felt that the Packers should honor John Madden for what he's done, to create much of the mystique surrounding the franchise. Even if it was done by video, over the large screen, and the first game of the season, it would rekindle a lot of emotions. I think they guy helped sell the Packers more than anyone else over the last 40+ years. Harlan harnessed what he did, and it worked.