I don't see why Nick Cave and the Bad Seeds would be too big as a headliner. It's pushing it at the top end but they're not exactly money-driven.
I just hope the headliners are smarter next year. You pay a premium for foreign bands so I'd rather it be someone with a good history than middle of the road bands.
The likes of Pavement, Lucinda Williams, Pulp, PJ Harvey etc
Ending the Sunday with a singer songwriter headlining isn't a bad idea (PJ Harvey)
You can chuck someone like Wet Leg (not really my cup of tea but about that size/buzzy) as the Thursday headliner.
I saw Young Fathers at GM and they'd be a great Friday headliner
For the Saturday, someone like Nick Cave or Pulp. Pulp, I assume, might be significantly cheaper.
There's always good stuff on the undercard, but the headliners put a lot of people off this year (I sold up and went to GM instead). Even if you're not fussed about the headliners, it's a point of value for money. They need to be acts that I can't go and see in Manchester most years for 30-40 quid. They need to be a bit different.
I mean, if you're really clever you could offer Boy Genius the Saturday headline and give them individually the other ones.