Allow the headset cameras to be used at any time
Along with muting the audio.
There have been numerous times where I would have liked to have answered my wife when she is screaming to get my attention while in-game, without having to remove my earbuds and headset. It's quite the process.
Also, if I'm sitting and playing while drinking adult beverages, it would be really nice to enable the cameras to see where my drink is.
Zarius Tularial commented
I think this is already a setting - see here: http://support.oculus.com/609948326077538/
In summary - in the experimental settings you can turn on passthrough shortcut and double-tap the side of the quest to see through the cameras at any time.