I was inspired by this thread to watch ROTJ again. In-between viewings I tend to forget how great it really is. The space fights are better than in any other space opera or sci-fi movie. I love how the movie is full of twists and turns and I adore Han Solo's dialogue.
I have a difficulty ranking the movies in the original trilogy against eachother. The original movies are so much greater than the prequels that the difference in quality between the old ones becomes minisqule in comparison.

I can agree that the ewoks are maybe too cute, but I choose to see them as ruthless savages
(like the Zulu tribe of the GFFA) and that works for me.

TipTup: I can challenge most of your points, but that is for another thread.