I didn't choose any option because
1. U2 would never do it IMO
2. Coldplay isn't at U2's level - not saying they won't, we don't know yet
3. Green Day. lol
4. not a big Bowie fan
5. Pearl Jam.......not so much, weren't they an opening act in Hawaii
6. Springsteen wouldn't do it either.
I'd kill to see Coldplay/Springsteen headline a festival. like Glasto last year