Luckily, there are still great parts of the films along with some average parts, the PT on the other hand have great parts in each movies, but then there are dreadful parts in them too. The ewoks are kiddie, but they are not annoying. The Jabba sequence does go on too long, but it doesn't suck.
TPM had Jar Jar, and he ruins the movie, AOTC had the love story, and that makes me wince everytime they talk jibberish to each other, and makes the movie laughable at times. ROTS has great parts, and then the whole turn scene is bad, and losing the will to live and Leia remembering her mom puzzles me to this day.
ROTJ atleast got the parts right that mattered: The space battle and the throne room scenes. To me, those scenes which constitute the last 45 minutes are pure gold, throw in jabbas sail barge scene, Luke/Leia talk on Endor when it actually made sense before this force memory crap, and Yoda dying then Luke finally confronting ObiWan as a liar in the original, an emotional ending, and it is a really good, but not great movie. There is nothing that really matters in the movie, like the turn scene in ROTS which was key to the whole movie, that Lucas & Marquard screwed up.
But as I said, the PT made me realize that the pinnacle of SW was ESB. That was the last time greatness swept us off our feet for two hours. And you begin to say, 2 great movies out of 6, is this guy really a genius?
Up to 1999, SW to me was 2 classics, and 1 really good movie, and that was fine with me, I mean how many classics can you make? But now that Lucas couldn't make one classic from the PT, and ROTS he had all the story to be better than ESB & Star Wars, but couldn't pull it off. If you can discount ROTS, cause to me the continuity between that and ROTJ make ROTJ a worse movie, I watch them as 4,5,6, and it is just like the mid 80's for me, no new SW movies on the horizon, and 3 SW movies of Luke, Leia, and Han, and no idea that Darth Vader was a stalker who was really bad in picking up girls in my memory..............