There's also an interesting discussion on how these things are converted from SD to HD in that reddit thread you listed first. I found an article that expands

There's also an interesting discussion on how these things are converted from SD to HD in that reddit thread you listed first. I found an article that expands on it a little more (though talking about the X-Files and referencing an image made for Star Trek) http://observationdeck.io9.com/x-files-remastered-in-hd-but-only-for-the-germans-1594416977 http://observationdeck.io9.com/x-files-remastered-in-hd-but-...