Contrary to what you may think, setting up a system
like this is quite
common in 'proaudio'. Wich means it is absolutely insane to autoconnect
any application that does not even have a volume control to such an output.
I think it is possible to discuss this manner in a less agitated way.
Ardour has jack autoconnect, Qtractor has autoconnect. In Ardour for the very same
usecase, which is even named the same: "Auditioner".
"Contrary to what you may think" this is not a bad comparison because one is a
sampler and the others are DAWs. All of them produce sound, all of them have no sound
ready when you start a new project.
And Tembro indeed has volume controls. One for the auditioner port and a one for the mixer
port, for each instrument.
The individual instrument outputs have no volume controls, and they are not autoconnected.
NOT connecting should be the default.
I am not against this. But convenience and a quick setup *are* important.