> it can be extended in to other attractive domains than code visualization

I'm glad people are pointing this out to me because I hadn't really given it any thought. My first instinct is that the data being visualized here is somewhat unique in how its structured—but if nothing else, once I get graph/state machine visuals in, I could see that probably being useful elsewhere.

With a lot of the dashboard kind of stuff though (which I admittedly haven't had so much exposure to), it seems like line graphs etc. are more appropriate from what I can tell.