Dropkick Murphys would be great - going to see them in July and just noticed there only playing 3 dates as well as Sonisphere.
The Lawrence Arms - I would love to see these again as well, new album out earlier this year, but I have no idea if they play festivals - I know they don't approve of Warped in the U.S..
Any chance of The Transplants? - Travis Barker would already be here.
Dead To Me
Sublime with Rome
I think Mike Davies said Rancid are too expensive, on the Main Stage would be nice though, don't think they've played since 2003.