I'd suggest you emphasize that near the top of your README, maybe with a cleaned-up version of the generated graph and some annotation of the data flow. To put

I'd suggest you emphasize that near the top of your README, maybe with a cleaned-up version of the generated graph and some annotation of the data flow. To put it a bit pointedly, "nobody" will care about the data structure until they see that it means they don't have to manually thread data down through the right branches of a tree. That's your big selling point.