It may be that a multi-pronged approach will be required.
For a number of reasons (that I won't go into here), I don't have much faith in the legal angle. Suffice it to say the wheels of justice grind slow (when they grind at all), and the cost puts legal remedies out of range for all but well-funded long-term projects.
Internal politics in the Wikisphere is hamstrung by rampant corruption from the top down.
Promoting higher standards of academic excellence and journalist ethics has not only failed, the effort to introduce the fundamentals of ethics was expressly
declared "beyond the scope" of WMF-sponsored projects by Wales himself.
Writing parodies and satires has not been a popular gambit, although there is
evidence that it does get their attention.
Individual editors who have run afoul of the central cabal have managed to find
alternative sites to craft their work, free from the dispiriting politics and spammish inquisitions that plague Wikipedia.
At this juncture, I believe WP's biggest threats come from three attractive nuisances: vandals,
trolls, and
drama-mongers.