Board Thread:New Features/@comment-24739709-20150518230347/@comment-11733175-20150609085658

It would still apply, but seeing as the MediaWiki devs have gone to lengths to make sure CSS and JS aren't editable by everyone and are acutely aware of security in their product, it's never going to be editable by anyone. It might come with a new user right or it might be tagged onto something else, but it's definitely not going to be unprotected.