If you were to incluse the /ban, as Ozymandias suggests, this is what I think:
I like his #1 solution, and I think that is actually a GREAT idea.
But I don't think that second one is suitable.
You say, "If more than half of the current users (those listed in the 'Other Users' box) /ban a user, that user is banned for 1 hour."
I notice that often, people tell me that the chatterbox is ut of their view when they have several windows open at once.
So say there are 10 users logged on, but 6 of them are not using/seeing the chatterbox.
This would render it impossible to ban a user, because only 4 users would /ban that user.
But maybe if you were to say if 1/3 of the users /baned a user, THEN ban them.
Just another one of my opinions :-)

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