I agree about Rev Ro being a good mod. She's likely the best among the public tribes I visit. You can tell she's present everyday and has the qualities you list, cathyq. She keeps on coming up with interesting things to discuss and she responds to the threads others start, too.

Aunt Bea is also a great mod. She also is present in her tribe. She commands great loyalty there. She has a great sense of humor.

She is also very fair with people, tolerating all kinds (probably more than I would) and rarely deletes things. She gives warning before removing a post or, on rare occasion, a person. Her tribe Ask, Aunt Bea has been trolled a lot in recent months, and she hasn't shut down the troll(s), but somehow managed to keep (most) people happy in her tribe even with a strong troll presence.

She starts welcome threads on each and every avatar that joins her tribe in a uniquely interesting way. Her tribe is always very active.