[krapp]

Not to be "that guy" but Hacker News has an API (linked at the bottom of the page) and you could make an alternate client and try it out. I've messed around with it in Godot, it's fun. Also a lot of frontends for HN get posted here, one of those might still be online and might have tried it with that layout.

Chan-style upvotes are never going to happen, though. Hacker News' entire thing is aggressive moderation and curation, and high signal-to-noise ratio, even at the cost of freedom of speech and diversity of opinion. Popularity is not a filter for intellectual quality, often it's the opposite, which is why high velocity threads tend to just set off the flamewar detector.

Of course, karma isn't much of a filter for intellectual quality either but what are you going to do?