zombie84 said:

Removing grain and fixing matte lines is altering the aesthetic of the film and fixing matte lines is altering both the aesthetic and content of the film. Dirt and scratches are instances of foreign objects attaching themselves to the film and damage to the film, and therefore should be removed.

This. Of course I want the matte lines. Of course I want the reduced opacity in the snow battle. That's simply how they had to do things back then. It's a perfect example of how special effects filmmaking worked then. When I first became aware of the opacity thing as a kid (ironically, through the SE doc), I thought that was so fascinating the compromise they had to make. Doing away with stuff like that, the effects of the compositing, would certainly not make it the original version in my book.