It's an interesting area. The 4-track master would have been mixed in a theater, to include a satisfactory dynamic range. The limiting mentioned would have been added afterward, not as a creative decision, but as a compromise due to the available technology (sound familiar?). So, following your suggestion for the Dolby stereo track would actually be a good example of (getting closer to) presenting the mixers' original vision (used here in the pre-Lucasian sense), even though it was not theatrically presented this way.

Similarly, the 70mm mix was a trial method used to take advantage of new technology. As Dave Schnuelle explained, that technology came to be used differently, so the '93 mix was a somewhat fudged attempt to update the '77 mixes to a contemporary style.

Ultimately you have to ask if you're looking for "theatrical authenticity" or the best representation of the original mix(es) with today's home theater set-ups, which are arguably two different things.