It's a love-hate thing. Most people (myself included) love how simple HN is. The only thing I wish I could have is: Being able to search through content I've saved or upvoted. I don't know if I care for any other changes. In my case, it would allow me to find "that article I saw years ago that I cant quite remember" and liked comments would be nice to be able to filter through too. Basically the search engine HN uses at the bottom only goes through public items.