Because maybe i want to lower some volume channels the same amount all at the same time? Because it's much more pratical? Because i don't like to bus everything? Because maybe that's how i work?
What does that matter? This is a simple enough feature to have and it should be here already.
I don't like saying this but every other software has this "feature".
I used the " " because i don't even like calling it a feature, this is pure common sense.