As a script-writer, I need to become extremely focused on consistent characterisation and making the plot flow out of the ramifications of that.
I’m also getting to better understand the nuances of each character’s motivations. Watching Buffy Season 4 taught me that you really only need to know what characters have just been through and how that makes them feel RIGHT NOW in order to be consistent. Let’s call it the ‘stay one step ahead’ mode of writing.