The big problem with only fighting below level 20 wildy to avoid mains is pussy clans will forever teleport like they have been doing (both in p2p and f2p). Whats more fun: teleporting the moment your bandits fight gets crashed, or getting a cluster at gdz with no teleporting and all clans showing up?
The ONLY way to have a 1 def scene without mains or without it reverting back is to have 1 def only worlds (just 1 P2P and 1 F2P would be good enough).
I would be glad to fight clans with 0 chance of them bringing mains because they cannot compete