What I noticed is that the 1.78:1 version does not capture the entire 35mm frame width (horizontally). Information from the right and left side of the frame is missing.
Seeing as there is already an uncropped prores 4K version, the best way would be to release the full unmatted uncropped version windowboxed within a 1920-1080 frame stabilised to correct the shake and the cue marks removed and having the entire 35mm width and height intact, no cropping of any kind.
That will be the best version to release. Please do it!