As in the title - it would be a much needed feature to accelerate adoption of UnityEngine in the Film Industry.
Use proper industry standard terminology (film backs/fov/exposure etc) much like what exists in the Unity Physical camera.
Tie-in the XR Editor with a menu item to use Unity Recorder to "record" Camera animation paths, and actual mp4 videos / png/exr sequences.
The XR editor will find bigger adoption in Design and Film industry, besides its regular usage for VR game design.
For comparison as many know, UE4 already has a similar in-engine XR editor.