Progressive Scan NON-Anamorphic.
Uncompressed PCM soundtrack.
Chapterstops in the same places as present on the Definitive Edition LaserDiscs.
No menus. No commentary. No additional soundtracks. Leave the alien-subtitles burnt in.
Do not use other source material - just the master tapes. Ie don't try to splice with footage from the 2004-DVDs.
Compress video to fill up all the remaining disk space, leaving as little as possible unused space.
Use a 4th disc for the extras.
Perfect. Those would be worthy of "Criterion Collection" type covers, which I would love to design of course. You could make a second version for people that want the perks of the audio commentary, 5.1, anamorphic, whatever other extras - but a DL set using the maximum possible video-bitrate while still having an uncompressed soundtrack would be second-to-none.