Wasn’t Duplex now considered as “outdated” for some (for me unknown) reason, by Danoise himself? Maybe I don’t remember correctly.
I think it would be great, if there was a tool supporting MCU Pro standard (Mackie control unit protocol), as it is supported by almost any DAW and a lot of today’s controllers. Also it supports two way communication for motor faders and displays on the hardware devices.
EDIT: I found this, will test that Duplex: Layout For Mackie Control Universal Pro