Reasonable shouts would seem to be Arcade Fire, Bon Iver, Wilco, Nick Cave, The National (although that’s starting to look a bit similar to the 2014 line up). Perhaps we will get a Kayne or a Frank Ocean. Doesn’t Bjork still owe them a show after cancelling a few years ago?
Will The Cure still be on their world tour next summer? Have Depeche Mode ever played? - they’re still pretty massive in mainland Europe.
Is there anyone left to reform who might realistically get back together?