Star Wars-there's about 10 brief shots in the death star battle, specifically during the initial dive, Luke-saves-Biggs, and Wedge-saves-Luke that feel like genuine, subtle improvements over their predecessors. Those painted people on the side of the throne room at the end? Fixing them was good. It's nice for that iconic shot to be just right.
Empire-Recompositing the snowspeeders was nicely done.
Jedi-the Rancor scene looks significantly better. I think the speeder bikes and stuff in the space battle were recomposited, too. They look good.
I think that's it.