Just a thought:
At the moment, some articles have disclaimer notices added (in addition to the general disclaimer covering the whole encyclopedia, of course). The new MediaWiki namespace has recently improved things by allowing the text of article disclaimer notices to be standardised and updates automated.
The process of adding these per-article notices could be made still easier when the name-value pair infrastructure is added by allowing the addition of _automatic_ disclaimer messages based on article category tags. These texts could be sysop-editable, in just the same way as the MediaWiki tags (or indeed might be implemented as MediaWiki tags).
-- Neil