I loved the descriptions of the Carheinien Game of Houses, where everything was political theater and anything you did in public was scrutinized for multiple deeper meanings. It's a shame the actual politics shown in the series was mostly pampered and immature nobles complaining that preparing for the literal imminent apocalypse was too inconvenient.
It'd make a great RPG setting, but IIRC every attempt at a licensed adaptation (aside from a forgettable FPS like twenty years ago) has ended up in development hell or terrible. Or both, in the case of the show.
I liked how there was a multi-book background subplot of some Aes Sedai investigating the Black Ajah in secret, only for them to get killed off between books (and their deaths only mentioned in passing during the next book's prologue) and the Black Ajah plot thread put on hold, then for the solution to the Black Ajah to be handed to Egwene with a wrapped bow a few books later.
I get Jordan was trying to cut out extraneous subplots and actually finish the series, but it sucks that so many pages were wasted on something that went nowhere, and the eventual resolution didn't even need them in the first place.