Alright, I'm looking at the SW sample, and I don't see the crazy amount of temporal artifacts that the 720 mkv had, but it also looks less detailed than I remember the 480 mkv being (sorry, at work and can't compare). Anyway, the fine (good) grain seems to be gone and the big (some may argue ugly) grain seems to still be there. So, why bother?
my 2 cents.
-G