Deleted Scene: In Bimbos, Dungannon's publisher reveals that at the end of each book, he would write a chapter or two where Tratyn Runewind is killed and/or humiliated, in order to vent his frustrations about being chained to the series; these chapters would always be removed before the book saw print. However, a psycho fan broke into Dungannon's room and found the chapter without realizing the context, which led to the murder.
Moral Event Horizon: In their youth, several of the Lanthanides raped a female friend when she was drunk and passed out; applies In-Universe as well, since the narration notes that Marion's tone of voice is a lot less respectful after The Reveal.
Values Dissonance: When Bimbos was first published in 1988, SF/fantasy, gaming, computers, and fandom in general were still extremely niche activities. It shows in the general attitudes of the non-fan characters (and perhaps even in the writer's).
Marion actually gets a mental monologue where she reflects on her own Values Dissonance, how in college she had the "Fans are Slans" mentality that non-geeks weren't "real people", and how she realized how disturbing and selfish that attitude is once she grew out of her outsider phase.