You don't get left behind because you not on-board with it lol.
I've got one of my favourite tours of the last 15 years and even all time going on sale soon so can assure you I'm not getting left behind from anything.
Nah. Logic suggests that if they're doing two up and comers in what you'd call non-traditional genres for headliner, they'll likely want a safer pair of hands for the Sunday. Chucking a hip hop star on would feel like a risk too far in terms of the festival fanbase.
Pure conjecture based on a strategy I don't pretend to understand of course
Current prediction:
Mercury Rev Thursday Far Out Headliner
Jamie XX Friday Mountain
New Order Saturday Mountain
Khruangbin Sunday Mountain
New Order is a pipe dream really. TV on the Radio, Bonny Light Horseman and The Horrors slotting in somewhere would be wonderful. Also get the Whollopers back for a Mountain Stage slot!