I would love to have an KOTH-type arena with killshooter on and the same map as the one currently used for King of the Hill. Or maybe one with a few more bases. All planes enabled and a 6K cloud layer.
No CMs needed, first come, first served, and maybe an arena message about respecting fights and not jumping into an ongoing event. I envision it as a place where squads could go and have their own King of the Hill type fights, or like minded peeps could get together for a change from the MA.
Yes it would have to be self-policed, but I don't think it'd be a huge problem. Killshooter would be on after all. My squad has been doing a good bit of squad dueling in the DA side fields and hasn't had any problems with interlopers so i don't think there'd be too much griefing.