@abge,
Well, overall, I certainly agree with your plea for better manners, but as I said, I'm just opposed to anything more. Certainly I concur that it would be excellent to attract more veteran and F2F players to our site; but the emphasis there, to me, is "our site." I don't have much interest in changing the site so that it's something F2F players will come to, but at the cost of fundamentally changing the character of the community (which I'm pretty sure would happen*). Instead, I'd focus on making sure new players were immediately aware of the policies and the muting options.
Another option, which might help and would be more positive instead of negative/censoring, could be to have moderator-chosen volunteers who were known not to misbehave too badly and whom newly recruited veteran players could contact if they felt overwhelmed by the venom and nonsense. Actually, as I type it, this seems like a pretty stupid idea. Anyway, though, my main point above remains.
@Thucy, Celticfox, et al. I would certainly never sign such a thing -- though there are players whom I choose myself not to interact with, based on their hateful personalities, I would never want to formalize that decision into a list of terms or behaviors. Does that mean I would be shunned, as well?
*I have been involved in plenty of moderated and unmoderated internet forums over long periods of time. I am unaware of any moderated ones that are as lively as this one.