It would be great giving Traktor the ability to send the master output to a second interface. It's useful for setting a DJ streaming with OBS Studio or other cool stuff.
I agree. Most other software did that with beginning of Corona lockdown or even sooner.
I actually had to make myself my own short cable, to go from booth out into line in. This is really silly.
You can already utilize Traktors Streaming Interface for that. I actually second the multi-interface stuff because of stability, but you could already create a custom device with multiple (virtual+physical) outputs using ASIO4All, Mac should also be able to handle that.