You named two things I like, but not the ones I am most fascinated about ;) So here's some notes that came to my mind the moment I read your note:

- Open Protocol

- Different trust model (you can write to many relays but don't have to trust them since you can just move and re-broadcast any time)

- Self-moderation (Nobody can tell you what is good or bad)

- Freely extensible and flexible (One structure for everything - just gotta fight for kind-numbers. xD)

- Organic marketing and trending (the social aspect is so strong in Nostr, that you literally can "get big" through reposts alone, without an algorythmn! - unless you are a bigcoiner from way back when, then it's a little easier.)