Thank you for the feedback! We're also really liking the timeline aspect of the stie, but we still think there's ways to incorporate at least some sort of graph model as well. This might be something we'd A/B test
Perhaps more or a PCA graph would work, where there is a clear grounding of the math in how you are generating it. Or perhaps a tree structure. I think showing connections is good, just think the timeline at the moment seems very promising.