Harmy said:

Wow, I never said I was gonna do it folks, just that I was considering it. It's just that seeing these 70mm scans I posted above really makes me want it to see it look like that.

@Stinky: Yes, but that is only in the case of the original negative. Every single print derived from the original negative will have its own unique and random grain structure on top of the o-neg grain, and make no mistake, it's own dust and scratches too, so if you had a preservation made from a print or even an IP, it would have extra, totally random grain and some dust and scratches.

But you're not scanning a print, the grain you're proposing would be entirely artificial and further obscure fine detail. You're adding artificial grain over a pre-existing home video release. You won't be recreating a legitimate/original grain structure. The grain would not be totally random originally - it would be part of the film composition itself (along with everything else in the frame.)

Likewise, by adding in dirt/scratches/dust you would not be recreating something genuine, you would be adding in something based solely on your aesthetic preference. Random dirt/scratches/and dust were not part of the original in any sense... they were defects specific to certain prints/reels/and poor projection setups.