I think as HN has become more mainstream (in spite of its focus), I surmise the diversity of the audience has increased too. I like the idea of a self-correctin

I think as HN has become more mainstream (in spite of its focus), I surmise the diversity of the audience has increased too. I like the idea of a self-correcting community (just as the markets should correct themselves in a capitalist economy) but from time to time outside intervention is needed when they stray too far. Perhaps I should rephrase my OP. Sub-HNs not to solve the front-page problem but as a way to segregate related posts.