Peter's pulled off plenty of festival dates. He is one of my all time fave artists and I'm sure he could fill a slot at Coachella. But ya know, I'll go ahead and aim higher-
Genesis (reunion with PG)
Talking Heads (reunion)
Pink Floyd (reunion of Gilmour/Waters)
David Bowie (Ziggy Stardust)
Neil Young with Crazy Horse
The Naked And Famous
Honestly, I prefer Genesis without Peter Gabriel and Peter Gabriel without Genesis but I think only Peter Gabriel is the right fit to perform at Coachella. It's actually kinda weird that they were ever in the same band to me. The rest of that list is stellar even if it 3 absolute long shots (TH, PF, DB).