What I think would actually be useful is a version of what was implemented on /r/ClaudAI which is an official bot which summarizes the discussion (and updates after x number of comments have been added). I think this level of synthesis has a compounding effect on discussion quality and pruning redundant arguments/topics.
Just read the posts instead of an AI slop summary
I don't spend much time on that subreddit, but I've seen that bot on a couple posts I've read and have been pleasantly surprised by how useful it seemed. I may eat my words on this later, but to me this is exactly the kind of application of AI that I have always thought was the most promising.