I am not sure if the feature is already there or not but I cannot find it.

Is it possible to toggle on and off a grid or crosshairs on the preview windows and recording window?

When doing greenscreening, it is hard to judge exactly where the camera subject is in the frame.... are they centered, a little off to the side? It's hard to tell because it is all black around the subject.

Even on the recording preview window, it would be great to have a grid you can turn on and off so you can tell if your camera is perfectly centered.

It would be great if a cross hair or grid can be toggled on and off so you can center the camera subject on the screen. It should not show on the Full Screen Final Output Window, just in the two small preview windows.

A Grid would also assist in making sure your camera is perfectly level.

Even better, maybe a greenscreen preview button too, which places the subject and greenscreen together for a preview before they are live in the recording.

Nothing Fancy needed, just a keyboard shortcut and small toggle button or right-click to activate it. If you want to do fancy, you can add the option for several different grid lines like dashed lines, color of grid, etc.