Is it possible to specify in mediawiki:Rss-item elements other than those specified by default to pass to mediawiki:Rss-feed? For example "category" and/or "dc:subject"?
Topic on Extension talk:RSS
Also, I'm trying to understand how the system works:
If it is not possible to specify elements, what's the rationale behind a two-template design?
Why can't one just use the template that fleshes out feed items directly, processing only desired elements among those hardcoded in the extension and ignoring the rest?