I have an idea for a really great feature to connect the forums to the handbook or some other book of documentation.
Currently, a user has to search drupal.org or pick through forum threads to find forum topics that address their needs, else they can browse the handbook. But the two are not necessarily connected.
What if, when a topic is posted to the forum, the user (who posts) is required to select or specify a sub-heading from a large structured outline of topics that define the handbook or other documentation book. At the same time, this act of specifying a sub-heading automatically creates a link under that same heading in the book.
Of course, it would be great if new headings could be added to such a book, either by the user or moderator, if no headings really fit a thread topic.
What this would do is allow users to browse the existing help in the documentation and have context-specific links to forum posts that apply to their reading. I'm not suggesting that the forum text be directly integrated in full, as part of the documentation. Rather, it would be easily accessible to the reader--or to the writer of that documentation--much more accessible than the 15-20 topics that currently break the forums into separate categories.
I guess another way of doing this is putting this outline structure directly into the forums. Currently, a poster must select a single forum topic from a drop-down menu. Why not create two or three more drop-down menus, so the poster could specify additional sub-topic categories for their post?