This is less an idea, more something for someone to think about. We need to figure out how to defeat the internet echo chamber effect. Notice how often, when a community gets started between a small group of people(such as early Reddit or HN), it's a place of intelligent, productive discussion, where people measure what they say instead of just spouting extreme rhetoric? Yet, once these communities grow, you inevitab…
The only way out I see is a paid forum, so that the site can hire full time mods. I'd like to build something like this one day, but its such a herculean task that I figured I'd need at least a year of runway to make it work.