Obi-Wan Force healing Luke back to life is actually a good idea IMO. It explains why he just gives up fighting Vader; he’s already dying anyway. As it stands he just gives up for no reason.
Man, Lucasfilm really needs to cool it with these special editions. I mean, I assume that’s what happened, they must have digitally removed that big pit in the floor separating Obi-wan from the Falcon, right? Because in the movie I have at home, he was caught on the far side of that pit and decided to buy Luke and co a few precious moments to escape.