Idea: Holding the thumb button on MX master and scrolling allows for zooming. I like how the horizontal wheel can be set to zoom in like a trackpad on safari, but once i am zoomed in, I cant use the horizontal wheel to pan around. This could be fixed by being able to hold down the thumb gesture button and scroll with the vertical scroll wheel to zoom. That way zooming can be used like a gesture, and when the thumb button is no longer pressed, normal scrolling and panning is available again :) that way you can have zoom as well as pan around functionality. e.g thumb button + scroll = zoom