greedo said:

btw

why didn't the death star just blow up yavin and wipe out the moon in the process?

Presumably the Death Star is built to wipe out solid rocky planets and not big gas giants like Yavin.

But yeah, the whole "Leia as sister" angle is completely stupid on many levels. Since Darth Vader just knows Luke is his son during the fight in Empire, he should know who Leia is while she's stuck in her cell and wouldn't have to find out from Luke by the time Jedi rolls around. Not only that, but it completely wipes out the Luke-Han-Leia love triangle from the first two films as undramatically as possible.

That's par for the course for Return of the Jedi, though. Instead of a disillusioned Luke confronting Obi Wan about his lie about Vader, we get a "certain point of view" BS. Instead of Han being furious with Lando over his betrayal at Bespin, the two are good pals again almost immediately. Even the film's climax has Darth Vader growing a conscience with little build-up or reason. It's a mess of a film I'm not sure even Adywan's significant skills can fix.