Everything I want to say is here:
Trolling isn’t a major problem, but the last few weeks should have taught us all a lesson. Stop the trolls before they get out of hand. Yes, this rule would be very subjective, but so are many of your other rules. If someone never adds anything of value and all their posts are either flaming someone or otherwise inflammatory they should be banned.
Also, having duplicate accounts should be bannable. It’s clear inky argues with himself until other people start joining in and then he’s created a dumpster fire.