Another reply: I’m not sure the resolution system is necessarily the foundation of the whole game. It’s an interesting question though!

The foundation, to me, is how the campaign world is organically deployed via jobs and downtime. Like, you could prrrobably play Scum and Villainy with a dumb pass/fail system as long as the jobs and the downtime kept spooling out new situations.

I know there are other opinions about what the foundation to Blades/Forged in the Dark is. Mark Diaz Truman doesn’t even think you can meaningfully hack Blades, I assume because of his opinion about what the foundation of the game is.