It’s not just the ‘creepy’ aspect of the two of them being brother and sister that I hate, in fact the main reason why I don’t really love ROTJ as much as the other three good Star Wars films is because of how convenient the whole movie is.
Luke needs to return to Dagobah to finish his training;
“Hmm, just make Yoda die. That way he won’t need to finish his training, and we won’t have to address the fact that Luke was supposed to be making a reckless decision in facing Vader without proper training.”
You have a point. In ESB Luke get’s his ass handed to him when Vader starts trying and then in ROTJ they’re pretty much evenly matched for the majority of the duel. And he had no training in between this…nor did we even see him get training in lightsaber dueling in ESB or SW and even then he was still able to land a blow on the Dark Lord before losing his hand.
There is another hope for the galaxy that is heavily implied to be Luke’s sibling;
“Meh, just make Leia Luke’s sister. That way we don’t have to introduce any more characters AND we can dissolve the love triangle between the two of them and Han.”
Has there even been an official comment on how Leia can sense Luke at the end of ESB even though it wasn’t planned for them to be related at that juncture? Because that’s usually brought up when someone mentions that.