I'd love to be able to see AMOLAD show and obviously SIT would be great to see in it's entirety, but I have to go with...
Seventh Son of a Seventh Son.
Yes, that era was more or less appropriately revisited with Maiden England tour, but The omitted Infinite Dreams and a live debut of Only the Good Die Young would be something absolutely amazing... I've always felt that of all the songs they didn't pick for setlist whenever new album was out and tour setlist took it's shape, Only the Good Die Young is one of those songs that would definitely have worked in the live set. You know, Alexander and The Propechy are easy to understand, but Only the Good Die Young would have closed the Seventh Son portion of the set so well... And we can just imagine how awesome it would have been in 2012-13/14.
It would be perfection as a one-off thing or a short summer tour or something... The show itself would cost a fortune though.
Seven deadly sins intro with flames/candles burning, similar to IESF/TBOS during TBOS tour)
1. Moonchild (w/ pyro)
2. Infinite Dreams (w/ something like the original backdrop)
3. Can I Play With Madness (w/ single artwork, possibly the icy version used during ME tour, pyro)
4. The Evil That Men Do (w/ single artwork)
5. Seventh Son of a Seventh Son (scribe Eddie, candles, pyro...)
6. The Propechy (w/ landscape backdrop, perhaps something similar to Infinite Dreams)
7. The Clairvoyant (w/ single artwork or alternatively just keep that beautiful etheric landscape)
8. Only the Good Die Young (w/ see above +
Seven deadly sins outro w/ flames/candles)
--
9. The Number of the Beast (pyro, flames)
10. Fear of the Dark
11. Hallowed be thy Name
12. Iron Maiden (pyro, Eddie + ice sculptures)
--
13. The Wicker Man/If Eternity Should Fail (w/ Wicker Man prop?)
14. Powerslave (pyro)
15. Wasted Years