I would like to be able to post a graded discussion, grade it, and then duplicate the discussion with all the original posts and replies. Ideally, the original posts/replies would not be editable. That would enable the students to add to the conversation and I could easily grade the new posts (there would automatically be a new gradebook entry), but students could not edit old posts. This would make it easier to create ongoing conversations about broad, open-ended questions. Right now there are workarounds, but they are clunky.