csl said:

An idea came to mind earlier: have you considered "regraining" ? Aside from giving it more of an authentic classic aesthetic, it'd sort of alleviate a big issue with the 2004 Lowry masters which is the grain freezing they suffer from. Grain will stop moving and start moving in the background and it's sort of jarring.

OK, I'll just come out and say it: I did! And I'm not changing it. I added some light grain to the scenes where the static grain was a big issue; the desert sequence until the canyon wipe and the selling the droids sequence. It's there in the last WP and I think it works great.

Also, you could layer on some heavier fake grain to sections that use the GOUT to detract from the lowres murkiness I suppose, could give it a "once lost footage but recovered from worn elements" look to it. Maybe.

I've always been doing this, adding fine grain makes SD upscales look more HD.