The Persona and Harmony themes support a feature where previews and links to all replies to a given post are accessible in the post itself, in a dropdown element. Will this by chance be available in the Lavender and Peace themes as well? This is what the feature looks like:
Post Reply List.JPG
I don't know how long NodeBB has had it, but it is a very cool feature. It's something I've always hoped for in discussion forums.