If you are convinced that it doesn't exist, I'm not sure anything I say will enlighten you. I'm still a little distressed that the artists' opinions are ignored here as well. Admittedly, we're in a curious world where the existence of certain technology allows us potential latitudes of revision which never existed before. You can make anything better. You don't often sense the loss till it's long gone.
Some improvements backfire.
I fear that establishing a stereophonic precedence where none really existed will distort the essence of the music, however subjectively satisfying it may be.