I'm not sure how putting the Aux tracks into a folder will help - I want them to be ignored when I clear the Input Echo state of everything else in one click, and I don't think being in a folder will change that. I want them on, all of the time, just like a bus would be. I can see there may be exceptions that matter to other people; but right now, it's just making my life harder.
If anything the Track Folder buttons have become
less useful of late - I used to be able to click Record on a synth folder and it would enable the MIDI record. Now, it'll enable the record on the audio track as well, which I don't want. So I have to expand the folder to click the MIDI track record button.
(PS. I have no idea what 'Mix Module' means. The Control Bar has no labels and no tooltips so I have no idea which one is which. I just use the buttons with the tooltips saying "Arm [Unarm] All Tracks" and Input Echo [On/Off] All Tracks.")