I guess I'd add the exterior shots at the rebel base in ANH.
It was kinda foggy and boring in the original, and a few sparks in the background were supposed to be the "leaving ships". That was kinda dodgy, and the new footage fit well into the context.

What else? I doubt there was anything. The Wampa annoyed me, because it looked kinda funny, and seeing it sucked out all the horror out of the original version.

That's it, I think. I liked the added Jabba scene, but it only works as a deleted scene.
The ROTJ ending could've done with the changed music alone - I'd suppose it'd take a bit more time for the entire galaxy to burst out in celebration as soon as the death star asploded? And cut out Jar Jar, please.