ping Quiddity (WMF)
Some of this stuff just seems to be a new ready avenue to have vandals break pages, especially some of our prolific vandals. It seems relatively easy to have a list of pages and individually convert them using the relevant special: page and just hammer away causing problems until someone intervenes. It would take a level of observation and would now seem to require two places to rollback a change, 1) on the page, and 2) via the logs; this is a considerable change, and not one that will be evident to many.
Do we have a ready means through abuse filters to identify AND to prevent the use of this function? For many WMF wikis the pages will be set to be wikitext and should only ever be wikitext. As such the wikis should be able to write an abuse filter to stop pages in certain namespaces from being converted, similarly there needs to be an abuse filter mechanism to simply identify this sort of change. It is a lot easier to be able to watch abuselog for vandalism rather than to now also keep an eye on a very busy special:log