Gang Audio Tracks for Track/Clip Mixer
Gang audio channels together and just slide one slider up and down and have several tracks sliders mimic the slide. I don't want to create a "submix" to patch the sound through, but instead, have a button that can technically link the tracks together and raise the volume up and down. That's it.
Mutliple "ganged" tracks without having to create a submix for each group of tracks. Maybe a new button that we can turn on and off to a selected clip/track in their respective mixers.

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Ron Inglis commented
Add my vote. In Avid Media Composer this is a great function. You tap the "gang" function on the desired tracks. Then adjusting one "ganged" level slider affects all the other ganged faders at once. Non-ganged tracks are left alone. I believe it's calibrated so that if you adjust down by 3db, that's what happens to all the other tracks.
It makes your mixing much faster!