People keep missing the point.
I don't care about personal insults. What do I care if some idiot I don't know calls me stupid?
What worries me is behavior that gunk up the works of a smoothly functioning board.
1. Responding to every post the same way. Think of BornofGod or hari. Soon their posts become like stones in a river and the conversation simply flows around them. But noobs keep getting drawn in and that disrupts threads. The board is for debate, not obsessive agendas.
2. Responding to every "type" with insult. Maybe they hate religion, or blacks, or women, or democrats, every post they make to such a person, as soon as he becomes aware of the type, becomes unwarranted insults to that person. Its isn't quite fair, say to a female, to respond, don't be so sensitive, when I'm a guy and usually free from such prejudice. No minority deserves to need thicker skins than majorities.
3. Spamming your obsession. Like posting multiple threads only meant to insult or shout your obsession. 26 threads on some variation of, "Are Liberals Stupid?" In 6 hours is spam that clogs up the board. Thread titles are not to be manifestos. Debate your obsession, not club people with them.
But everyone seems to go straight to name-calling. That is usually minor stuff. I've been called everything in the book. Never bothered me, as long as we can still debate.
So I have no issue with your idea. But if you do it, and some bozo begins spamming that thread at 50 flame threads a minute, or attacking any physically handicapped person who posts there with physically challenged specific insults, no one can go running to the mods.
But the moment it spills over into the main forum, I will have a huge problem with it. And I'm almost certain it will.