I really like this writeup. I find the metaphor satisfying, though there's a reason metaphor receded into the bushes as a practice in XP. A great metaphor is great to have, but they don't always exist. Fortunately with organizational systems, things will tend to rhyme. For example, a role that "Verifies that all processes have been followed before anything merges" seems like it could fit many different systems. We're at this fun stage where people are just trying stuff and I love it. I hope we get more info from this experiment.