Rip out all the gamification. You'll still get notifications for things like comments but you can't read them without going back to the full thread.
Most features would be opt-in rather than opt out. Staggered ability to interact with each other. Ie, fill out a profile to some degree before you can even follow someone.
It's still anonymous, but with a lot more control & you can get warnings about accounts trying to follow you with their CWd content