I'm working on a multimedia sequencer whose formal model is based on synchronous dataflow : https://ossia.io ; it's actually a fairly common model in audio-video software since it maps so well to the problem domain (applying operations on inputs and producing outputs at regular intervals).
Ossia looks like a fantastic project! I've only spent a few moments looking through the site and github, and see some interesting possibilities for integration into my work. I'd love to connect with you. Let me know where best to reach you, my contact info is in my profile. I'm working on an ecosystem management framework where public art installations serve as monitors, dashboards and signal generators for citizen scientists and artists working to expose environmental impact. We've been looking for a protocol to route messages in and out of MaxMSP, Unity, and the external graph databases, and your use of OSC seems to solve many of our problems. Cheers!