I like several of these dice ideas in narrative theory but I'd want to run some probability numbers to really see the impact on the game. It's nice to suggest these kinds of things on a thinktank, surface or aesthetic level but I'd be curious to see how the actual, real math hums under the hood. Also, the delay and fatigue side-effects of the reds and greens comes into play quite a bit with my games. Are you guys just ignoring these effects completely, or finding other ways to represent them?
No that is why i suggested using the stance dice as the upgrade instead of the expertise dice. That allows player choice when making a check and leaves the delay and exertion effects in play.