Be able to flag chapter/scenes by character POV, action, subplot etc.
I would like to be able to see at a glance which character's POV each chapter is and things like whether it is primarily an action chapter or background or character building etc. Maybe themes and or subplot. If it is at a glance via color or symbol or something, I could see if I was getting too many of the same type of chapters bunched together, things like that. Being able to easily pick which chapter's are a character's POV is also important. Seeing the overall flow is, too.