Addon enabling Discourse-like trust level?
I'm running a Discourse forum (for trial purposes) but am considering other alternatives. One feature Discourse has that I really like is the concept of Trust Levels -- especially the idea that active and liked users can be automatically promoted to positions where they can perform simpler moderation tasks (like changing the title/category of posts, or hiding spammers). The idea is that you'd need fewer actual moderators that way.
Is there an addon for Vanilla that provides similar features?