At first, I wanted to ask why all that work is done locally instead of just controlling a mixer over the network. Because, I mean, when networked audio is already happening there's almost invariably some kind of mixer involved somewhere, but think I get it: Controls for mixers are all over the place, but AVB and Dante are fixed and unitized and it's easy-enough to find those streams (and/or for someone to make them available) on a network.

That makes your method very universal in application. Even when the monitor feed is an analog split (as is still often the case), it's easy-enough to convert that to Dante or AVB with a stage box [which can be rented] so the performers still control their own ears.

Nice, dude.

And yes, I want one. (Whether I can afford one or not is a different thing entirely, but the want is resolute.)