I remember talk of a sequel trilogy around the time of Return of the Jedi. I also remember that is was generally considered to be something that would never get made by the time the Thrawn Trilogy was being written. There were doubts if the prequel trilogy would be made at that point in time, but it was considered a possible thing. The sequels were considered an impossible thing by 1991 standards.
It would take just over 20 years for the impossible to become reality. But for at least the first ten years of that...there was no reason, at all, to consider the novels to be anything other than the continuing adventures of the Heroes of Yavin. After that point things started to waver around a lot. The authors seemed to communicate less with each other. More inconsistency started to happen. The films were remastered with new scenes. Then the Prequels happened, and everything changed...sort of.
I remember someone who hated the Prequels simply for what they made Boba Fett. Not the nature of him as a clone, or his backstory changes, but that he was played by a Maori actor. I think she was smitten with the idea of a white guy in the suit, and the change turned her off. I don't think she ever saw Revenge of the Sith. She was just done with Lucas.
The 1990s were definitely an interesting time to be a Star Wars fan (until The Phantom Menace shook us from our nirvana).
I can remember playing Dark Forces like crazy and seeing all these crazy, cool new worlds in the SW universe.
Everything up until The Phantom Menace served to enhance the Star Wars experience.
Or at least, that was my experience.