When I say realistic though, I mean songs that were already rehearsed, or Bono previously speaking about playing them again or....perhaps a song that would really fit into the setlist.
North & South will never be played, but for some strange reason if it was played I wouldnt be suprised.
After the Elevation tour I was talking to a couple of my die-hard U2 buddies about the next tour, I sware to God that I mentioned on several occasions that U2 was going to either pull Running to Stand Still, Wild Horses or An Cat Dubh out of their ass this tour......lol, they did all 3!