It would be easy to implement as all these are just MB recordings with a recording-recording remaster relationship (that is now deprecated but that’s still exists).
But.
At the beginning of NGS, MB did separate recording for each master.
But it was decided to stop and I agree.
It was unneeded complexity, as in most cases, it’s another unverifiable info so recordings will proliferate, each new releaser will get its set of overkill recordings, without daring to merge them.
And then you I can no longer see if this or that release includes recordings that are or are not yet in your my collection: