It would be pretty awesome to get some RATM Customs. They have many great and epic songs to rock out with, even though they already have some great songs on the Rock Band Music Store and have Renegades of Funk as a custom, they still have plenty awesome songs like:

– Know Your Enemy

– Ashes In The Fall

– No Shelter

– Freedom

– Bullet In The Head

– The Ghost Of Tom Joad

– Calm Like A Bomb

– Wake Up

– New Millennium Homes

And plenty other great tracks you could have some much fun with.

RATM is Epic.