I find it childish to have people "invading" each others boards to cause trouble.
If they come over to start threads like, "AR15's Suck," let it be debated and locked if the discussion gets out of hand, but the same rules apply to everyone. If the topic is something you just dont care for, then dont read it. If it contains abusive language or commentary thats perhaps pushing the limits of good taste, then I would hope it would get locked. If the person starts throwing racist or sexist terms around like a child, then I expect them to be banned and the threads deleted. If you guys wish to defend the "honor" of these forums, you do so at your own expense on another's "property." Personally, I feel that simply removing the "filth" is defense enough.
As for the "evolving" nature of the forum policy, it's simple a notice so that we can update it to account for new and unforseen problems. It is NOT for another moderator to add his own laundry list of issues.
I think the few rules here have been establised to keep trolls and trouble makers out and keep the discussions healthy and clean. This does not mean there will be only topics we, or you, care for. There is after all that Freedom of Speech thing, of which I am a big fan...
Hope this helps...
-- GB