Breathe strikes me as a natural encore opener. With the powerful drum intro, I imagine it would be used in an attention-grabbing slot such as that.
I don't think a new song will close. In an ideal world, I'd like them to continue using Bad/40. That was fucking magic when it appeared at some Vertigo shows. I'd rank it as the best closer U2 have ever played, even ahead of 40 by itself or Love Is Blindness.
Streets.
Wont happen, but I think it would be a cool closer and have been saying so for a couple of tours.
Id Say for the last 3 songs
Walk On
One
Unknown Caller/Grace
I have never understood why they don't close with Walk On, it is so fitting for a closer.
Love is blindness would be brilliant as a closer especially if we get a few pop songsI'd love Night And Day but they probably wouldn't do it. Cedars would be good or love is Blindness