There is an eminently and patently useful extension called "Drafts" that was written a few years ago: https://www.mediawiki.org/wiki/Extension:Drafts.
This project kind of stagnated and/or died, I believe. I'd like to see it revived. This bug is about doing whatever is necessary to have this extension deployed to Wikimedia wikis.
Version: unspecified
Severity: enhancement
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=55370
https://bugzilla.wikimedia.org/show_bug.cgi?id=73241