I put a concrete example in the sample app. "pizza" depends on "size" and "base". So a DAG, as you point out, is less constraining than a tree. When you shoehorn your state and orchestration into react components, not only do you have to fit them into a tree, it's fundamentally the wrong tree.
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.
