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There are a number of dead posts in this thread. I'd post some here (some of which don't appear to violate any HN guidelines, I'll note), but probably those same moderators would kill this one, too.
HN is awesome because of the rules and moderation (including bans); any unmoderated forum devolves into a cesspit; and it only takes a surprisingly few bad apples to ruin a community.
It was awesome. Then it jumped the shark when people realized they could flag posts they don't like with no repercussions.
One problem with metamoderation is that once a particular forum becomes an echo chamber, even metamoderation will unconsciously but repeatably ignore "valid" information from the other side and amplify misinformation from their own side. But if the site owners specifically searched for good-faith users from multiple viewpoints to serve as the jury pool for metamoderation, this could be workable.