Is there a way to make the film shake? Is that included in the scripts you're currently using? I think that could help a little.

The plugin I use can make the film shake, but I can't find a way to adjust it (it's too shaky for my taste, and it don't works on Premier Pro though). So I made a black an white video of the dust, noise, brightness vibration and vertical lines from that plugin and use it as an alpha layer on Premiere Pro. So the result does not shake at all. However, I think it could be cool to find a way to have some shake, but not during all the movie.

there is a filter called "radio" that gives it that tinny, scratchy, inside-a-tunnel sound. Or maybe something like a single speaker phonograph or projector sound. Might want to play around with something like that.

I'll take a look at it.