[hules]

OSC is just a way of packaging messages with an optional timestamp, despite its name, nothing in OSC is specialized for audio applications. There is no pre-defined convention for "Note-On" messages, "Note-Off", "Sustain Pedal" etc... If someone had taken the time to define these messages maybe it could have been a replacement candidate, but without this it offers nothing more than json.

Also OSC is typically transported on UDP messages (because it is easy to do), but that's a terrible transport since it is unreliable, and messages larger that some OS and network dependent size are just discarded, so you can only use it reliably for message bundles smaller than a few hundred bytes.