While browsing on here a while back Im sure something similar was posted, you do feel in hindsight a lot of issues and plot points were squeezed in to the film and maybe suffered because of it.

The weakness I find in this are the Jabba palace scenes and from the end of Speeder Bike chase to the Vader/Luke scenes on the platform they hold the film up with an exception for a few scenes such as Luke and Leia discussing their parents are side-tracking from the main story issues of the trilogy eg Luke Vader and the fall of the Empire, and they make it a lesser film than Star Wars and Empre Strikes Back.