Out of curiosity have you heard of Tildes.net?

It's a non-profit site created by a former Reddit admin Deimorz (known for being the creator of /u/Automoderator, /r/SubredditSimulator...).

It's currently in closed alpha so the community is somewhat exclusive because of that; but if you wanted a HN+reddit hybrid, then it might be worth checking out.

sub: /r/Tildes source: https://gitlab.com/tildes