The value of the mono mix is not so much that it is a single channel, but that it is a different official mix, with different vocal takes used than in the stereo or multichannel mixes, different sound levels for certain elements, different placements in time for vocal parts, different special effect sounds, additional dialog, etc. I didn’t want to create a new “special edition” mix from scratch, but to enjoy the unique official mono mix, but in stereo.

I don’t know what “just converting the mono directly to stereo” means. Receivers cannot do what has been done here. If you can’t magically make two channels out of one, why do you say that receivers can do it? If I extracted the unique elements of the mono mix and inserted them into one of the stereo mixes, then it would be a new mix since the stereo mix has unique elements of its own. I wanted the official unique mono mix (and only that), but to present it in stereo. You can download and listen to one of them and see if you think I succeeded.