This rendering of the data is neat, but there's no clear way for anyone to provide a different rendering or access the underlying data (it's embedded somewhere in a script) to scrape or mash up with anything else. It's also not a progressive enhancement over a static version of the svg; it's just blank unless you're willing to run that js.

Good thoughts. There's a lot to be added and improved upon - this is just the beginning. We're planning to incorporate all of the above, so this feedback helps.