I often need to compare multiple designs to select the one which works best, for that I preview them on mirror. But to compare the screens I need to explicitly click on each of the frame to preview in the mirror.
What that does is, it takes away my attention from comparing the designs on the mirror screen - to my laptop screen and I need to do this back and forth to switch between frames:
A → B → A or,
A → B → C → B → C → A, etc. to compare them
What would be really helpful is to have the ability on the mirror to simply swipe right and left to preview the adjacent frames. (exactly like the “Crystal” mirror for Sketch on Android does).