mAsterdam: A number isn't meaningful. Any other way to get to some content (names, links) is preferable most of the time. However, when you want you to put a question or start a discussion and you don't really know yet where the content is going, it is good to have some neutral hook. This is where the BQM list serves well. The RecentChangesJunkies will notice. After a while, though, when the discussion has cooled down, the context is clear. If there is a better hook than a number, we can make it so: integrate the question/the discussion into the rest of SL. BQM Categorical List is a step in that direction, IMHO. I agree with you that it would be nice to have the short description there.
tapir: Added headings in 2011 to make navigation by TOC possible.