1] Ditch the Freeze button and add a Freeze all button to the to the top of the mixer above the channel freeze buttons. Call it freeze all. The button is a mess. Why the heading "Set tracks to frozen uneditable" headline in grey? The button already said freeze. Why have the list of all the tracks? This can all be done in the mixer - like any mixer on a daw. Get rid of redundant clutter like this button, make things intuitive. It's not a problem to open the mixer.
2] Add a "return to default value" function to any slider that is control clicked - this is industry standard
3] BIAB across many windows machines, is the only program I have that hangs woindows shut down, when I press Shutdown. Cubase does not do this, Office does not do this, Hundreds of other programs do not do this.
Z