Redmine

I'd love to dump Mediawiki and use the built-in Redmine wiki also for the knowledge base. However, without wiki page categories that won't be much fun. (E.g. one category per each different programming languages.)

Instiki for instance uses this syntax for a visible category line:

category: Bugs, Features, DontKnow

Or this for an invisible category line:

:categories: InvisibleCategory

You can then link to category indexes with a special wiki link. See 'Assigning page to categories' on this page for more.

Would other folks be interested in something like that? And if so, is it rather a plugin or a feature request for core? Opinions anyone?