Now that it's possible to label pages, it would be nice to be able to limit/filter search results by label(s). For my particular needs, this would be particularly useful if combined with
CONF-3963 which would allow attachments to be labelled. For example, by labelling certain attachments as a document type, e.g. "proposal", you could then search all off the proposals on the site by searching things with that label. Adding these two capabilities would go a long way towards being able to use Confluence as a better document repository.