Mouse X Y Z are special kinds of axes, relative and not absolute. Anything you can bind to a keyboard key or joystick button you can't program any kind of axis.
I know. That's why I'm looking for a workaround of some kind.
Example of what I want:
L.CTRL + X-axis movement > yaw
L.CTRL + Y-axis movement > pitch
L.CTRL + Mhweel up/down > zoom in/zoom out
This way I can keep using the mouse to point and click the buttons and switches in the cockpit and also quickly use it to look around and zoom in to my MFDs by holding L.CTRL down. Since I have my left hand continuously hovering above the left CTRL Win ALT segment, this would be so much faster and convenient than toggling from point and click mode to view mode and vice versa by using L.ALT + C.