Mistar Muffin said:

I made a few screenshot comparisons from the first act. I can make more if anyone is interested.

Luke viewing probe droid crash with binoculars

Han entering Echo Base on Tauntaun

Wampa lunging at Luke in cave

An example of added snow flurries

Obi-Wan force ghost

Luke in bacta tank

Probe droid taking photos of shield generator

Echo Base interior matte replacement

Stand-by ion control…fire!

Great job!
The external shot immediately proceeding the ion control one is also great for continuity/geography.