Indoor Wireless Camera - Rotate 180 degrees

I also want to invert the camera.  In my case, I want to mount the camera from the ceiling/corner, pointed 45 deg. down and 45 deg. from the walls.  The motion detection would be fine, since the sensor would be pointed directly at the desired detection zone (front door foyer) that's less than 20 feet away. Why not enable this feature for the indoor camera, with a warning to the user that motion sensing may be compromised?