If client like Damus has anonymous, private, public, features for zaps why wouldn’t client have the same features for notes? “broadcast only to your followers” option for example 
Discussion
There needs to be something in the protocol that allows them to specify this. I believe the zap privacy is just about whether the client posts a public note on Nostr that says you zapped their note, or posts a DM, or posts nothing at all. And I'm not sure how that last option differs from anonymous.
That's not just a Damus thing, either. It's in Amethyst too, and I suspect is a defined standard somewhere.
A NIP saying note type XYZ is for notes that can't be shared (boosted, broadcast, etc.) but are otherwise to be treated like type 1 notes.
Sure, there should be a NIP for this, but it’s disappointing that no one is bringing these ideas forward. Devs have stopped listening to users here!