I personally think it's a distraction that we're using so many real-world sources as the source data. But arbitrarily detailed synthetic data, e.g. Nanite, Fractals, etc. can provide much more interesting spaces. I'm kind of surprise that nobody isn't just using examples of Mandelbulbs or whatever as standard data sets for these techniques.

On the whole though, this is really interesting and definitely is an improvement over the much older splat techniques.