The missing horizontal information is marginal as far as I can see and it is necessary to crop it just a little because the edges are never pixel accurate in film. This isn't digital. The information on the extreme edges are subtly changing/weaving because of the mechanical action of the film camera.

You can stabilize the full film frame in relation to the sprocket holes, but the image inside will weave instead! That's why you need to crop just a bit of the filmed image area to keep the image steady. Don't worry, because the cinematographer knew it would be cropped even worse in theaters and made sure there was nothing important on the far edges.

The vertical information is interesting in an educational setting, but you will see boom mikes, c-stands, missing ceilings etc. An interesting version to be sure, but not "superior".