This is terrific. Any chance you have a link to such a meta-rule?

Is LessWrong one of these rationalist communities? Here's their relevant FAQ: https://wiki.lesswrong.com/wiki/FAQ#Site_Etiquette_and_Socia...

The reason I ask: My local political party recently adopted a geek-style Code of Conduct. Huge help. But as you can imagine, our policy debates remain suboptimal, sometimes getting rather acrimonious. Neither our bylaws or Robert's Rules of Order say much about playing nicely. Maybe some experience, advice from rationalists would help.

(HN's guidelines would also be a good start for my purposes. https://news.ycombinator.com/newsguidelines.html)