For me, this is a really compelling childhood memory of the Scholastic Book Club flyer that described Splinter of the Minds Eye as the story that was originally going to be the Star Wars sequel. I convinced my mom to let me order the book, and couldn't wait for it to arrive. It was likely one of the first "grown up" novels I ever read.
Of course this did kind of impact the way you viewed the Official Sequels. The sexual/romantic tension between Luke and Leia was made pretty explicit, which heightens the Ick factor of Return of the Jedi's revelations.
No Han or Chewie in this story, which was one thing that kind of surprised me.
and we finally got to see the Luke/Vader lightsaber fight that we were hoping to see in the original Star Wars film. and not in the unexpected manner it unfolded in Empire Strikes back.

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