... The Cortex rules are excellent, but they just fell away, as we focused on scenes and what just felt like, "should happen."
It ended up being very rewarding, and satisfying. Players told me, they just kind of forgot about the rules too.
I’ve been slowly shifting my games to fewer and fewer player facing rules to achieve more of this type of realistic and flexible play over the past few decades.
I just found the Free Kriegspiele Revolution is going on right now on Discord, and I wondered if others posting or lurking in this thread were interested. Basically, a group of people are trying to design and play RPGs with minimal player facing rules, which is intended to emulate the style that David Wesley (and earlier proponents) used to represent the fog and uncertainty of war games.
A good blog to start with if you are potentially interested:

Free Kriegsspiel: Worlds, Not Rules, Etc.
What's Free Kriegsspiel? That's a silly name. Okay, free kriegsspiel (FK) is shorthand for "ancient school" RPG theory. That is, how were r...