I think it would be good, when having a paired MX Keys and MX Master 3 that they keyboard key for the input on the keyboard also activates a change in the mouse input.

ie, press 2 on keyboard, and 2 on mouse is also activated.

I use a suite of 4k monitors, and the keypress would be advantageous when going from one application on the far side of a monitor to another application on the far side of the second, or indeed at times third monitor.

I don't believe this should be a default setting, but a selectable one.

Thanks