Reading this article and thinking back on the users on HN that I do enjoy reading comments from I think that a neat feature may be the ability for a logged in user to "favorite/mark" specific authors. Those authors only get some particular character in front of their name (or a different color) so that they stand out more. I do agree with this post about seeing certain names and knowing that the signal ratio will be higher is nice. May just need a better way to discern those when scanning a comments section.