I think HN needs user karma and subdivisions/subforums in addition to the current system. Users will have a very limited amount of votes (like 1 or 2) per each

I think HN needs user karma and subdivisions/subforums in addition to the current system. Users will have a very limited amount of votes (like 1 or 2) per each user to up or down their karma. And subforums would have karma thresholds voted by participants, to prevent spam and low effort posting. There are even more complex approaches with better self-control too. Sure, such systems have their own drawbacks, but as a complete system, they are usually better on average than no-karma forums. PS: current karma should be better called a score or something similar, it is not very useful.