Faction tag
A faction tag is a prefix on a page that identifies clearly what factions approve of it in its present state or not. It's probably key to getting inter-faction consensus and minimizing use of factionally defined terms in analysis.
For pages factions will always differ on, such as theories of economics, the faction tag might help move alone agreement on a few central definitions like the glossary. For policy, it is important to know who has agreed so the Consumerium Governance Organization isn't "taking sides" in disputes, and moves only on those things that have a broad base of multi-faction support.
For some things, though, multiple point of view is the only solution. This includes irreconcilable factional terms that only those factions really use and which prejudice discourse, and also situations where they don't agree on facts.
references
So far only one MediaWiki-based service has debated this issue at all, see http://ouranswer.org/ discourse on factions.