I'm really surprised at the 'nostalgia act' sentiment. Maybe I'm wrong, but my opinion was that they took it on the chin when DeGarmo left, and then got dragged to the mat during the '00s by the Tates' (Geoffy and Susie) antics. I account their horrible output to that - not the fact that they were 'done', or their best days were behind them (ala true nostalgia acts the likes Motley Crue, Van Halen, or Kiss). Sure, DeGarmo is still out of the picture, but I think they've got something to prove, and all the capabilities to do it now.
I don't fault them at all for touring from this album just on the first four albums. I felt it more of a case for them to play their best material, reconnect with and reinvigorate the fan base - not so much a matter of them relying on that material. I don't recall people accusing Maiden of being a Nostalgia act for the Somewhere Back in Time tour?
Sure, I'll reserve my final judgment until the next album is out, but I've got every reason to be optimistic about the future of the band ... something I haven't felt since Promised Land - cuz I still think HITNF is a stinker.