Right. From our similar results (with one source being film), I'd say not only is this a laserdisc preservation ... it's also a THX 1138 artistic preservation.

"People who alter or destroy works of art and our cultural heritage for profit or as an exercise of power are barbarians, ... There is nothing to stop American films, records, books, and paintings from being sold to a foreign entity or egotistical gangsters and having them change our cultural heritage to suit their personal taste." - George Lucas, before the U.S. Congress (1988)
(http://savestarwars.com/lucasspeechagainstspecialedition.html)

Still, it's always cool to see previously unseen screen area.
(Apparently the LucasFilm crew grabbed every bit of image real estate they could for yet another GL "director's cut" and just disproportionately resized the finished framing to keep it all in.) <--the squash smiley