@Null
Jannysaries need to issue selective thread bans to most active users as means of cooldown.
If the thread banned user brings a sock before cooldown is expired - cooldown period increase by a power of 10. 3 infractions and you are banned from Autistic Thunderdome. The rest of the community is available. Circumvention just bans you from AT, no need to issue a sitewide ban.
Jannysaries should create a locked topic, where all the users can see who got thread banned. If a threadban is for a specific reason - link a thread and explain why.
News threads - locked after crossing 50 pages.
Happenings - rebrand as discussions, lock threshold - 1000 pages, then topic is deleted, users are free to recreate the topic again but it has to be clearly shown in the topic name what is the topic about. Jannysaries are permitted to exercise their judgement, subject to your oversight. Off-topic results in three-strike cooldown rule outlined above.
Also, introduce routine randomized bannings. Users reaching three strikes and already banned from Autistic Thunderdome will be eligible for a month ban at random on selected days. If they attempt to circumvent the ban and get detected - permaban.
I think it won't stop dedicated faggots, but it will thin out the herd significantly.