I propose to create a new section of PO called 'conflicts'.
The purpose is to have a clean separation between discussions of official and technical issues (in 'meta') and discussions about complaints and violations of user rights or etiquette (in 'conflicts').
Any serious violation of user rights should be posted and discussed in the section 'conflicts'. Any serious violation of etiquette should also be posted and discussed in the section 'conflicts', but only if it couldn't be settled through editing and/or private discussion.
A number of the old discussions on meta could be moved to 'conflicts'.