If you are indeed doing two versions, Harmy, that's absolutely wonderful. Giving people a choice is the best option; hopefully, it's not too much work. Seeing the video you uploaded earlier with film grain was nice; the grain and few dust specks were subtle and undistracting.

I do agree with Hairy Hen's idea for adding a bit more film grain to the multi-generational special effects sequences, at least for your "vintage version" that is; for instance, the Mos Eisley flyby seems to by nature be grainy because of so much composited.