I would like to see a reunion of the Clash.
Obviously, Joe Strummer has gone on to that great big rock n roll gig in the sky so in his place the logical choice would be another British singer of the time namely Boy George. And instead of Clash tunes they would do songs by Toto, Styk "Lady", REO Speedwagon, Journey, & Jefferson Starship. Johnny Rotten would come up to sing, "Thank God I'm a Country Boy," and Billy Idol to sing, "Billy Don't Be A Hero."
Then, of course, for a little variety I would have Helen Reddy come out riding a unicycle backwards and singing, "Ace of Spades," in Japanese while Gary Glitter does unspeakable things to male porcupines in the front row.
The finale would be all the musicians onstage to sing, "Old Time Rock N Roll," by Bob Segar with George Michaels doing sign language and making paper mache hats for everyone!
I know this, or concerts like this, are so commonplace now but this would bring tears of joy to my very heart!
I would like to see Seals& Croft reunite but instead of them it would be Loggins & Messina in their place and they would do songs by Simon & Garfunkel while Flo & Eddie masturbated to pictures of Hall & Oates.
Oh, it would be a special night, a very special night, indeed!