Let’s kick off some activity here with a question:
How much crunch do you, personally, like in your games?
Ultra Lite? Lite? Basic Set? Every book you can get your hands on?
Light on combat, heavy on skills? Vice-versa? Light overall with some aspects way more fleshed-out? Heavy overall with some aspects way more simplified? Are there specific mechanics you like to take full advantage of? Mechanics you like to gloss over?
No wrong answers, let’s just get some discussion going
This seems like the most pragmatic approach. Personally, in my upcoming game, I’m planning to basically go with my gut while allowing my players to challenge my rulings at any time. If they do, they can reference a specific mechanic they think should be used, and I’ll either agree or counter.
That way, things keep moving most of the time, but players don’t feel like they suffered some crucial irreversible consequence because of flippant or inconsistent rulings. I think putting the burden of finding the rule primarily on the player also prevents overzealous challenges from bogging the game down.