I would assume the original broadcast masters would be on a higher resolution tape format, however I can’t find out much about how the original video toaster system worked or what Video tape format was used, so I can’t assume that there is a PAL broadcast element that would sufficiently improve upon the DVDs which look awful compared to HD (sorry purists, I wish they would have BSGd the release so I could have both).
All of that being said if anyone can compare a PAL version to the 480i dvd or laserdisc please assist us.