Dave,
In April of this year, the UAB finalized a set of recommendations for improving forums and publicized that work and Tracy posted our results: https://openacs.org/forums/message-view?message_id=177680
Of those 11 items, we selected 1, 3, 5, 8 and 9 as the most important. We didn't elaborate upon this with use cases, though we intended to do so if they were called for.
When working on the Concord project, I had the chance to use the new forums and though I was pleased, I noticed that many UAB recommendations were not implemented. Threading and display choices have significantly been improved with the work that has been done, but other defined needs were not addressed (such as: moving threads, sorting, flagging new). Are there plans to make further UI/usability changes along the lines of what the UAB explored?
DeeDee