If you were Iron Maiden, and you were going to play songs that hadn't been played in 30-40 years (or hadn't been played live at all), would you pick a track off of one of your least beloved albums that almost no one is clamoring for? Or would you pick a song from the '80s records that are way more popular and that more people would get excited over? Especially in the context of a 'greatest hits' tour where most of the slots will be filled by genuine classics. I really think NPFTD is a pipe dream, but we'll see for sure in a week I guess.