I don’t think there is anything that you can do. The only reason people switch from old communities to new ones is because of a vastly better UI for your avera

I don’t think there is anything that you can do. The only reason people switch from old communities to new ones is because of a vastly better UI for your average user. See the switch from Usenet to forums to Stack Overflow / Facebook or w/e. In the case of Digg to reddit, Digg’s UI got worse. The only thing anyone can do is make a new app/website with vastly better UI and then live through your values accordingly. Most of your blog post is about moderation/monetization and that’s important, but to be honest, it doesn’t speak directly to your average user.