I wonder if any of the EU others at Bantam books or del rey could have written better prequels as novels, not novelizations. But based on the original ideas kurtz and Lucas put together in the late 70's.
Except for the necessary changes that Vader is Anakin Skywalker, they are not seperate characters. Oh and Luke And Leia are his children,lol.
I wonder what an alternate sequel to star wars would have been like, a revenge story probably. Luke gets revenge for the murder of his father and His teacher Obi Wan.
This would have really led into a revenge of a jedi story. Lucas determined sith take revenge not jedi.
If Empire and Jedi were not made as they are the story could have gone anywhere.