Brilliant! This is absolutely something i've thought of doing (but secretly hoped someone more talented than me did) and i'm glad i stumbled across it! Look forward to more system-agnostic stuff like this!
You made my day, really. First commenter ever, very very grateful.
I've published this morning the NPCs companion to this one: https://savvydonkeypress.itch.io/saxon-npcs
Feel free to grab it and don't tell anybody I'm working on a bestiary ;)