I want to hear the 360-tested songs, but do they belong on a new album? Probably not. They would seem dated. Remember these songs are over 3 years old now, and will be over 4 years old by the time the next album comes out. Glastonbury will never see the light of day outside of being a B-side, I'm sure of that. Mercy has already been released, in a way. Boy Falls From The Sky was on Spiderman. The quite amazing "All My Life/Moment I'm In" seems to have been shelved for no apparent reason. North Star is a good song and would make a good single, but it seems like it's already had it's day with its brief appearance in the last Transformers film. That leaves Every Breaking Wave, and... any others?
I believe the next album will be completely new songs and that's the way I'd rather. There's something not quite right about putting on a brand new album to listen for the first time and being able to sing along word for word with it.