Well, to keep the tunes from BOY and OCTOBER in the setlist(s) would be great, even more to switch them from night to night - and add tracks like "Out Of Control", "I Will Follow", "October" or "Twilight" ( the latter two - let's just imagine, okay?) to this rotating system.
For me, the couple "An Cat Dubh", "Into The Heart" has always been one of the big live moments in U2's history. And so it has proved in NJ 1 and NYC, too, where the band delivered beautiful versions of these tracks.
But: We still don't know anything in detail at the moment. The band rehearsals with Bono yesterday pointed at the "well-known" (though great) songs from the 1st leg. Maybe we get to know more tonight - but surely tomorrow with one of the most interesting tour opening shows ever, I guess: Will they play the same basic setlist as in the US? Will they vary? And if "yes", which tracks do they chose to skip or to add? How is the gig working in large scale? Does the band feel comfortable on stage - and us in front of it? So, we'll see soon ...