I think what would be nice (but won't happen until cost of AI somewhat decreases):

1. Pre-moderation - AI looks at your comment before you submit it, and suggests changes for clarity, factuality and argumentative strength. You can decide whether to accept these (individual) changes or not. It will also automatically flag if it breaks moderation guidelines too much.

2. Discussion summary - AI will periodically edit main debate points and supporting sources into a comprehensive document, which you can further add to with your comment. This will help to steer the discussion and make it easier to consume in the future. It can also make discussions less ephemeral, which is a huge problem.