A band that would totally satisfy the global popularity, durability, and no stage too big for them id love to see is Metallica. I think in the old days a band that heavy might have worked and be viewed as consistent w/ NFL. But in the new era of no head shots, protect the QBs, no hitting defenseless WRs, etc etc .... set list of "For Whom the Bell Tolls", "Search and Destroy", "Creeping Death" and "No Remorse" might not fly in the Commissioner's office LOL