From what I've pieced together from the other films, that's how I always viewed the Empire anyway, so that doesn't really bother me. If anything, it's kinda interesting to have it actually said outright.
The Empire Strikes Back only has a couple new touches. The Wampa puppeteer's arm is no longer visible, and the Cloud Car that passes by Leia's window now casts a reflection. It looks like the saber's are a LITTLE better than on the DVD.
The deleted scenes include a couple things with the rebels holding Wampas. Extended dialogue after "You could use a good kiss" that ends with Leia getting pissy and calling Han a hotshot. Extended "scruffy looking nerf herder" that begins earlier with only Luke and Leia. Extended kiss on the Falcon where after the initial kiss, she says "Okay, hotshot" and they kiss again, more passionately before being interrupted by 3PO. More training with Yoda, involving him holding some sort of beam for a while, then moving it which Luke is supposed to grab. And finally, a scene of Leia tending to Luke at the end, where Boba Fett is mentioned by name.
Return of the Jedi's deleted scenes have an alternate opening of Vader going to his meditation chamber and reaching out to Luke as he did in Empire. This was fully scored and is actually on the Special Edition soundtrack if any of you have that. Meanwhile, Luke is in a Tatooine cave making his green lightsaber. Moff Jerjerrod has basically an entire subplot lumped together in one long deleted scene, where he is choked by Vader but lives, and is later given the order to turn the Death Star to destroy Endor if they lose the shield. Crix Madine has some deleted scenes as well, where he is commanding a ship, and he even has some of Ackbar's lines. The rebels led by Han can be seen storming the bunker, some cool unfinished action, which of course ends with them being ambushed. This time, when the Imperial says "You rebel scum", Han replies "scum?", it's done very well. Various shots of pilots in cockpits, most of which did not make the movie, can be seen repeating lines the director shouts at them, in most cases very poorly. One of the female cockpits made the film but was overdubbed by a man. There is a Mon Cal pilot at the end that repeats mainly humorous lines (I imagine they would've been overdubbed by other lines) like "fried Calimari tonight!" and "this is the last time I'm flying Lucas Air!".