Totally Moderated Wiki
Fragment of a discussion from Project:Support desk
1) MediaWiki cannot do this. Flagged Revisions can provide some moderation capabilities, but it can't really all the stuff you're asking for. If you need this, a content management system will likely do a better job than MediaWiki. 2) You can use an extension like Preloader to automatically add boilerplate text on page creation. 3) What would this site be about? You have to consider that if you're going to go looking for potential contributors. 4) See Help:Categories for information on how to use categories. You can also copy that page into your wiki to provide category help for your users.
