Any suggestions? IMO, The Offspring should do a like U.S. tour with a band together like they did the past, especially when they were supporting Smash, Ixnay and some of their later releases.
In my opinion, I'd say they should tour with one of these bands/artists:
Big Drill Car (if they plan to stay reunited fulltime)
Bad Religion (now that would be a killer tour)
Rage Against the Machine (if they plan to stay reunited fulltime as well)
Snoop Dogg (although he's touring 311)
Down (a project of former Pantera singer Phil Anselmo)