I know people will see me as some sort of heretic but i always thought the matte lines should not be on the blu ray.
You can do oodles of other digital crap but leave the lightsaber's incorrectly colored and the matte lines.
I though it was great that Adywan showed all you needed was a home computer and some off the shelf software to remove those garbage mattes. Multi Billion Dollar Lucasfilms could not afford it,lol.