It seems to me the problem is the word “rule”. Rules imply rigidity and immediate disqualification for breaking them.
Best Practices seems a better term for them, or tips and tricks, Things that can help as long as they’re not making the story worse.
I think I remember a GITS post about a do-no-harm philosophy to approaching scripts, now that should be a rule!
(besides of course all the things about formatting and typos but if you are a writer you should care about these things for their own sake.)