If I’m interested I like to read all replies. 

Different ways I’ve seen replies is in Damus it looks like it’s first is always top. Where Primal seems to be opposite. Could see both sides. 

Maybe a future third option is weighted rank based on zap/share/reply to that reply? 

 I personally like to see replies chronologically. Easier to follow the conversation. Any other way I think it should be something you can opt into but isn’t decided for you.