Why avoid the two notes? I think, for the most part, the atomicity of nostr event makes for better composition; I also might want to share a highlight that I found but not necessarily the highlighter’s comment; is it just to avoid having two events?
Discussion
the main issue is that they would both appear next to each other in peoples deeds when you do a quote highlight. Every client would have to do special timeline filtering unique only to this situation just to fix this