Attached is a picture of Brian May with bassist Micheal Anthony, (formerly of Van Halen), after Chickenfoot's Manchester Academy show.
If you're unfamiliar with Chickenfoot, check them out!
What Brian should do, as the Chickenfoot guys, is joining with other legendary musicians and form a supergroup just for the pure pleasure of playing and recording.
He just would need a legendary singer, a legendary drummer and a legendary bass player ... and an original name for the band to avoid pressure from fans, media, etc!
Oh, wait ... he almost did it. Almost.