Terrific. Thanks for the links, and the edit. :)
After skimming these, and poking around, I haven't found any metrics for participants. Like applying Moneyball notions to wikis. A very effective, popular example is GitHub's contribution visualization.
From the hip, I imagine sparklines for various metrics. The badges are nice, but depicting the timeline is important feedback. Like how many articles an editor helped shepherd to publication over time. So it'd be more obvious if editors are gatekeeping, how many of their decisions are appealed, how many decisions they lose, etc.
Frankly, the wikipedia governance is overwhelming for a noob.
Unsatisfied with most depictions of how bills become laws, I created a graph to represent the tortured path each bill takes. (I really need to stay off HackerNews and work on my projects instead.) Imagine one of those American Gladiator course challenges as a flowchart.
Again, thank you.