I can absolutely see them opening with The Blackout followed by The Fly. It would make a lot of sense considering the Blackout rocks followed by THe Fly would turn the crowd on its ear. The songs are sonically similar although differant keys . Also In the innocence shows ,,, early songs (ooc, electic co, gloria , i will follow) were in the beginning of the show. .. I believe that the Experience part of the career started At Achtung Baby. The fly hasnt been played the past 2 tours ,, I can see this being its return to prominence.