Well, that's just an external 'translator' to translate the SAC HW-Interface commands to commands that the TIO can understand.
I'd like to have that external kind of 'translator', so that you can control different I/O devices using the build in GUI.
The build - in HW control seems to be in a beta state (not sending data for all channels on start, initializing mic - gain to zero (or not initializing at all?), no stereo linking, no labels ... ). So currently I'll use my plugin.