I have worked on similar projects to this game in the past (at scale) so it's close to my heart. To me the benefit of the default redundant arguments error is

I have worked on similar projects to this game in the past (at scale) so it's close to my heart. To me the benefit of the default redundant arguments error is pedagogical. It forces me to think more closely about what it means to set nullable, assuming I was coming to the game with a limited understanding of Django code. Just glimpsing a note in the docs doesn't register nearly as quickly interactive play does. I would love to see this format used more extensively. When I'm learning an API I tend to fire up a REPL and explore it by poking. I do it even with basic mathematics that have fallen out of my brain. Very much enjoyed and it served as a quick refresher!