A once a week, once a month, furball setup that has all planes enabled, no perks, and ultimately, the evil con planes.
I truly believe that if you build it, they will come.
Ideally no capture, fairly small terrain with 3 - 4 fields per country, and a nice big furball lake in the center.
Afterall, HT said he doesn't care WHERE we fly, as long as we are flying and having fun.
So why not an anything goes arena?