Official announcements and happiness!
Levels of Achievement and Awards
Create levels of achievement and awards for being involved and making comments.
Create badges/Icons
Make it easy to give/assign team member titles within the Community.
Here's a kid website that is a remarkable example: https://diy.org/skills




Speaking as a user, not staff here.
I'm not for this idea. I want to reward communities, like we do for milestones, not users. Yes, a community is nothing without its users, but I want to avoid having power users, or users doing things just for the awards as much as possible.
I've yet to come up with a good use case for "I'm 10 points away from a badge, like this so I can get it" being good for a community.