Allow users to subscribe to other HN users' synopses, such that I would only see my favorite commenter's synopsis. Simply place it to the right of the link, taking up all that space that is not being used yet; put the synopsis in a more transparent color than the other text- like the <0 down-modded comments.
We ( as synopsis authors ) would invent shortcuts for rating and summarizing the content that would fit to the right or be truncated. And when a user clicks on comments, the full synopsis is always at the top of the comments.
And maybe the descriptors that different users would implement ( like their own tags/ratings for the content ) would become unique to that user, eventually, and have contextual meaning to that author. Each synopsis author would have their own tags that they could reuse. Only people who subscribed to that author could see their synopsis so authors' silly or cryptic or worthless synopsis descriptors would not clutter HN readers' experience unless they subscribed to a particular s-author ( synopsis author ).
So each user could have a customized right-hand HN site by subscribing to other synopsis authors and each synopsis author would have their own ways ( tags, most likely to start ) for communicating concise summaries/likes/dislikes of the content posted on HN.
