As someone who produces music with synthesizers - there's also no (well working & established) standard for running/managing multiple audio sources over usb. T

As someone who produces music with synthesizers - there's also no (well working & established) standard for running/managing multiple audio sources over usb. There are some valiant efforts (e.g. Overbridge by Elektron), but even those took a lot of effort, are proprietary and buggy.