ROTJ was doomed from the moment that Lucas pulled 'the plot twist' out of the air at the end of TESB.
Because there is really nothing that makes being a Jedi special now since there was _never_ a reason to lie to Luke and Yoda and Ben now look like criminally negligent monsters-
YouTube - How The Empire Strikes Back Should Have Ended‏
Similarly, it was NOT 'heroic' for Luke to take on seven star destroyers, 400 odd TIE fighters and upwards of 50,000 men all by himself. It was suicidally stupid. The ONLY way for that to work would be if we were seeing 'time out of order'. As everything that happened with Leia and Han occured -after- Luke was already on Bespin.
That said, what use was Luke, once there? He got into a fight that he could have easily extricated himself from (by cutting a hole in a wall with his saber) and his presence on Bespin was in fact _too late_ to save anyone as the escape was essentially already in progress when he arrived. R2 helped but Luke was weak and ill-focussed and suckered into attacking a man when his sole justification for being there was to make a fast escape.
Then, when ROTJ comes around, you have Luke being all sappy about how Darth Daddy was really a good guy at heart (having chopped off his arm, tortured his daughter and forced Luke to choose suicide) and you wonder...why?
Because if Luke gives up on his friends -this time- (when he can actually be of some use to them, on Endor or in Space) to go save Anakin, he is putting one man ahead of all the things he believes in.
It's still OCD nonsense it's just that this time Luke is doing it for the other team. We call that treachery and it is punishable by death.
There was also never any doubt in my mind that the Emperor was playing a head game with Luke (Dun Moch) and so throwing away his saber after getting it back was the equivalent of refusing to end the war by doing what was necessary rather than 'socially acceptable'.
Screamed contrivance to me. Because it essentially says: "Good cannot kill evil, only evil can." And thus we should rely on evil to kill itself. Which is a dumb idea and made Luke look totally femme too.
Did not like anything in the opening return to Tatooine because again, it makes it look like Luke has to surrender to win. And you know that if Jabba is pissed, he's not going to feed you to some Sarlaac in the desert.
He's going to put a blaster to your head and kill you right there. First among the victims being Han Solo who would have been dead, five minutes after he arrived, as an example: 'Because Jabba said it would be that way'.
WHY put all of your friends at risk _by surrendering_ when you could just walk in behind a Rebel strike team and take Han directly? It's not like that chunk of carbonite is going to be all that vulnerable to antipersonnel weapons...
Ewoks... Urgh. Biometrically, they are not correct for arboreal tree dwellers, being fat and short limbed instead of long and thin. That plus the obvious seams on the suits really stood out to me, even in 1983.
George Lucas also needs to read up on his history. The Viet Cong were betrayed by their Northern Allies as the latter gave away the game to U.S. intelligence through false signal traffic that staggered the attack times (1 day apart), weeks before hand. The VC didn't win the Tet Offensive, they lost nearly 90% of their effectives and were WIPED OUT as a fighting force. In 1968. Five years before we pulled out.
It was deliberate of course, without a southern political resistance, the North could just walk into South Vietnam and start running the place without contest. But is that really the symbol you want the Ewoks to stand for?
And let's not forget all those traps with the 10-20 ton logs. That would take _weeks_ to set up. And yet (in the novelization) it's not until the Luke and Leia both speak up to convince the Ewoks that it's necessary to fight back that they actually start planning.
And what happens with the whole Rebel strike fleet coming in without proof that the shield is down or -staying- (in what is clearly an ambush) once it becomes likely that Han & Co. are long since dead?
The threeway schizoid ending also bugged me because it mixes emotions at a time when the plot needs to be focussed.
ROTJs plot logic is all over the IITSian place. And the disaster started in TESB.