So, in the connection with Infinite Dreams, let's speculate, because that's what forums are for and it's fun. Let's say they are going to play Alexander The Great and Stranger in a Strange Land, the songs (most of the) fans have been craving for years. With that move they have played many songs fans have been hoping for years (Icarus etc).
Are there any other songs, deep cuts left to play what they could realistically play?
Although they dropped Infinite Dreams from Maiden England set I think that this song has a chance in the future, maybe on the farewell tour if there would be such thing. Maybe kinda similar situatsion like Icarus, not played when it was supposed to be played (Early days tour, Somewhere Back in Time tour) but in the end boys gave it a chance and it worked wonderfully.
What else, maybe Killers - was absent from Maiden England tour and this lineup has played it together, although it isn't as demanded as Alexander.
Steve expressed desire to play Only the Good Die Young, but again, not as significant nor demanded as Alexander.
From reunion I would say Brave New World, although last played in 2010 so not so long ago compared to others on this list, but still would love to see it make a comeback.