"The problem with GnR is that they suck. The songs suck. Even when they were in their prime they sucked. Remnants of an era of misogynistic sunset strip garbage. Bros who dressed like girls but still acted like high school jocks.
Coach board had a pretty legit festival rule system.
I think one of the most important is to have the same number of bands, or possibly just a limit to avoid just a battle of lists, and then some sort of limit on reunions.
A more advanced rule system will be there for the next edition. This one is like a tryout.
I'm not a fan of the same amount of bands. But it's mentioned in the rules section that there's a minimum amount of bands and a maximum amount. This should create a lot of diversity between te festivals.
There's also a limit on reunions mentioned in the rules section.