Note for reference: it's much easier for a fandom to have slave!AUs or slavefic when slavery canonically exists in the universe. "X and Y get captured by slavers" is a *remarkably* popular gimmick. (It's rarely, if ever, Chewbacca, who *was* canonically a slave.)
Also found an article called "FROM STAR WARS TO JEDI- THE FANZINE WAY," by Sharon Saye, which ran in 1985 in the fanzine WOOKIE COMMODE #2. Of course, I promptly lost the URL and it's not coming up in Google, but I did cut and paste a copy for my own reference, so can provide some interesting quotes. EDITED TO ADD: Aha! Found it.
The real attraction of fans to the SW universe has always been George Lucas' characters. Each has his, or her, proponents, but, by far, the favorite character in all of fan fiction is Han Solo. Over the course of eight years he has gone from being the red-neck trucker of the skyways to a responsive general in the Alliance. In fan literature he has had an exceedingly varied career. After SW , fans accepted him pretty much as presented: a charming, sexy smuggler with a hidden heart of gold. But after TESB, fans saw him in a different light. He has been depicted as everything from the "other" to a prince. He has been Darth Vader's son and his brother, Luke Skywalker's uncle and even his father; Leia Organa's childhood rescuer and her murderer. He has been beaten, tortured, wounded, killed, maimed, blinded and drugged. He has fan-created sisters, mothers, father, brothers, grandparents and children. Women of every race and occupation have been involved with him [. . . ] One of the advantages Han Solo presents to writers is his lack of a past. [ . . . ] Even his alleged heritage as a Corellian is nowhere verified in the movies. He can be anyone. What more could a fan writer want?
And in the "plus ca change" department:
Leia Organa is the one character who has had more than her share of detractors. In some fanzines she is pictured as cold, manipulative, and heartless. Leia in reality is a very complicated character who changes throughout the saga while staying essentially the same. She is loyal, dedicated, understanding, committed and intelligent, but she is often depicted as one-dimensional and selfish. Even in the best of stories, "Life-Line" by Anne Elizabeth Zeek (Kessel Run 4), for example, Leia emerges as the most dangerous of the series stars. In this story she would slag the Rurlizar Prison where Luke is held in order to prevent his revealing Alliance secrets to Vader. Later, only Han prevents her from murdering eight unconscious prison guards. Leia's pragmatism and relentless loyalty to the Rebellion earn her an eternal revenge in Zeek's sequel, " Blood Line"(Kessel Run 4). One zine, Against the Sith, was extremely anti-Leia, in an analysis of the virtues of each of the SW characters, Leia ranked just above Darth Vader.
*looks innocent* I certainly can't see any parallel to modern fandom there, can you?