In Live View and Video View window - have Next and Prev Camera buttons so you can cycle through live views so that you can select your next camera _without_ having to hit “Back”/“Close” and then goback to “Dashboard” then clicking on the next “camera” and then clicking on “fullscreen” - too slow and too many steps.
Just a Next Cam or “>>” and Prev Cam or “<<” icon would suffice allowing you to go to next.
Even better if you could start priming in background the next and prev cameras so that its faster opening to live view modes.