I wouldn't necessarily target a single value like that. But, one of the things I find particularly impressive with my favorite author is how well she does at tracking every character's beliefs/knowledge and mental state. It's not "value", exactly. But the way she manages to keep track of who knows what, who believes what, when they've taken emotional steps, etc, really brings the characters alive.
A tool that enabled a timeline that makes it clear where scenes are and what the current states of any number of arbitrary variables (per character) with the ability for something enum-like and booleans seems like a tool that would make achieving that easier.
(I'm not a writer, just a super heavy reader.)