Providing article & documentation feedback

There currently isn't an obvious way to provide detailed feedback on articles, or on documentation in general.

Articles have the "Was this article helpful?" buttons, but that doesn't allow a user to say what is missing from or unclear about an article. Adding a form allowing detailed comments that would be displayed when a user clicks "No" would address this (as is common practice with online documentation).

Search results show what look like comment icons (a speech balloon) with numbers next to each article (element attributes label this as a "meta-count"), but no comments are shown on the article page, nor seem accessible anywhere. If the icon is supposed to mean something other than comments, such as the count of other articles that reference the article, that meaning is poorly represented by the icon; if this is the case, the icon should be changed to one that better implies the intended meaning.

As for providing general documentation feedback, such as requesting articles that don't exist, there doesn't appear to be a good place to make the feedback. The best I've been able to find so far is here under the "Other" topic, but it's too broad to clearly be the place to make such feedback. This could be solved by adding a "Documentation" topic.