Ya know, it really speaks to how pathetic mainstream music has become, when people get a huge hard-on for anything put out by a band that hasn't been relevant for 20+ years.
I think you might be exaggerating the expected response. Sure, there will be some folks who will buy the album and see the tour no matter what, but with so much instant information available, we'll be able to hear the whole album and probably see most of the shows on youtube anyways, so most people can make up there minds when it comes out.
I agree it is a good point about the general lack of other interesting music, though. Rush is the only band I'm really interested in seeing this year. Oh, and I do have tickets to see Roger Waters at Wrigley Field in June, but as far as "newer" bands, ziltch.