Good point. Totally agree, the brother-sister thing is ridiculous in ROTJ. I generally try not to diss the OT as I prefer it over the PT, but that was one of the biggest mistakes Lucas made with the OT. Leia should never have been Luke's sister. There are so many things wrong with it it's not even funny.... okay, it's funny, "You kissed your sister, dude!" "Shut up!"