I remember watching your older comparison videos — they were already pretty good, but these WIP videos are clearly even more detailed and well-researched. It’s great to see how thoroughly you’re breaking everything down.

While looking into some of the original audio mixes myself, I came across a few more differences between the stereo and mono versions of A New Hope that might be worth noting.

Here are a few videos that highlight these and other mix differences — could be helpful as references:

https://www.youtube.com/watch?v=7W-Ij64FaE0
https://www.youtube.com/watch?v=yf7a-Pdznf8
https://www.youtube.com/watch?v=IheRbiaoBn8
https://www.youtube.com/watch?v=7QeugdaNbt8
https://www.youtube.com/watch?v=aeXpcYcZNDw
https://www.youtube.com/watch?v=s2I2NSECyK0
https://www.youtube.com/watch?v=wfC3DGKEbiA
https://www.youtube.com/watch?v=UTvSrAb28aQ

Also, regarding the missing snowspeeder crash sound in the 1993 audio mix of The Empire Strikes Back — I think I found it. Here’s a clip where it can be heard:
https://drive.google.com/file/d/1sGFi3gcT7Dc7R7dGsEhI6XrwxUIIVT3e

One more thing — there’s a comparison list between the 70mm and 1993 Laserdisc mixes over on the forums. It might include a few changes you haven’t listed yet:
https://originaltrilogy.com/topic/70mm-mix-to-93-mix-comparison-Released/id/6501