They tend to have an on/off/on again series of lineups given touring schedules...
I think they will go for a 5 headliner set (2 co-heads) and try to play it off like we're close to 2023 levels.
Linkin Park or Foo Fighters will be there, and I'm leanin' Linkin.
Big rap act will be Tyler the Creator off the back of his worldwide tour and hit album. I'd have said Kendrick but he's the biggest in the world right now.
He will co-head with an alt-rock like Twenty-one Pilots.
The indie headliner will be Sam Fender, again off the back of a huge tour for his next hit album. He will co-head with a dance act like Chase & Status.
Subs will be Fontaines DC, Little Simz, Idles.
Sam Fender / Chase & Status >> Idles
Tyler the Creator / Twentyone Pilots >> Little Simz
Linkin Park >> Fontaines DC
Maybe this is one of those things where just because it works in the UK, it wouldn't work everywhere. Even if it is something I'd be on board with, but then that just needs another 49,999 to think in similar ways.