Heres a little list
The New Sandcrawler
That Aurebesh replaced English
R2’s color correction, Blue R2 not Black R2
Oolas Raincore Pit extension
Removal of the Cardboard Cutouts in ANH and replacing with actual people (BEST CHANGE)
Better Lightsaber Effects
Blast Doors
Biggs Darklighter
Now i love that we have the Despecialized Edition, But i wish we had a Harmys Special Edition with the Good things that were added/fixed.