One interesting enhancement that would help with that and that also addresses the problem of duplicates is to simply count duplicate link submissions as an upvo

One interesting enhancement that would help with that and that also addresses the problem of duplicates is to simply count duplicate link submissions as an upvote on the original. That's how it works now. For example, I just submitted the URL for https://news.ycombinator.com/item?id=30160524 https://news.ycombinator.com/item?id=30160524, and now it's on 2 points with no 'upvote' button next to the link for me.