Great tool!
One feature that I miss in many generative music experiments is the ability to export the generated MIDI clip. Could be a different target audience, not sure, but being able to export and re-use a pattern adds a lot of appeal.
An example that I love to show is this poly rhythm generator: generatorpoly.ozieblowski.dev
A bit off-topic. Does browser MIDI implementation allow syncing across tabs with MIDI clock? It would be interesting to develop an open way to sync all these fun organic generators.