Well, the biggest limitation is that it has granularity of 0 to 256 for message data. That means if you want an analog like continuous change from 0 to max for

Well, the biggest limitation is that it has granularity of 0 to 256 for message data. That means if you want an analog like continuous change from 0 to max for some audio property, you get stepping instead. It's also not very fast for todays work with tons of channels. I doesn't know about audio at all, etc. OSC is a better replacement, but not widespread enough.