A lot of time was wasted on "Edit wars" and in some cases undesired edits still occur. It is unfortunate that there are personality clashes, but it happens - even on a site like SO.
I propose that SO allow a user to block some small number of users (perhaps that is determined by their hitpoints, or other score. ) from:
- editing their questions
- editing their answers
- voting on their questions
- voting on their answers
In turn, the user who elected this is also blocked from the other user.
To discourage this perhaps it would cost the user some hitpoints for this functionality.
I think it would reduce some overall friction and "meta" from the SO site.
In spite of Jeff and Joel refusing to allow SO to be a "Social" site (and I agree with that decision) there is no denying that it has significant social aspects - the good, the bad and neutral.
This suggestion for functionality is intended to keep some personalities from chafing others.
It shouldn't be used widely or without good reason, but I think it can be useful.