I'm watching ROTJ right now and I have come to the conclusion that the entire musical/dance number at Jabba's Palace should be completely removed. Although one might argue that it would cause continuity problems for when it shows the dancer try to choke Jabba and fall into the Rancor pitt. Well, that can be cut too. That way, when Luke falls down, the audience will be like "Holy crap, secret trap door!"

Another thing, this has got to be one of the worst scale problems I have ever seen in a Star Wars movie:
Shot 1 - Showing the Banthas

Shot 2 - Showing the Banthas from far away?

Then the shot pans to the left to reveal the Sail Barge, does this seem wrong to you? It makes the Banthas look like they're mice...