For Episode II, the biggest one is the different primary video source. The transfer is far superior to the BluRay if you ask me, for the color alone.
There are nips and tucks, but I included an additional deleted scene (the extended arrival on Naboo), which also allowed for shuffling some of the order of scenes and use more of the original theatrical wipe transitions. Of course, there’s also better looking upscales for the deleted scenes.
That’s all the big things I can think of at the moment; I’m not sure myself anymore. I’d recommend getting it if you want to have these on your go-to list.