This is the one I have. I can’t recall any issues with it.
http://www.lddb.com/laserdisc/32747/70011-78/From-Star-Wars-to-Jedi:-The-Making-of-a-Saga
There was a second pressing, but it was part of the Japanese Definitive Collection boxset, and probably harder to come by.
http://www.lddb.com/laserdisc/35715/PILF-2071/Star-Wars-Trilogy😄efinitive-Collection
No idea if it was actually remastered though.
As for the pillarbox issue, maybe a dark starry background could work? Dragonball Z Kai episodes air on Toonami windoboxed this way.
There must a be a good high res image of a Star Wars starfield out there.