Meyer and producer Harve Bennett sat down and watched the entire series though. That’s how they got the idea to revisit Khan.
Bennett did, did Meyer? I didn’t know that.
Nemesis director Stuart Baird didn’t know Trek either, and allegedly thought Geordi was an alien. Levar was supposed to have been upset about that.
JEDIT: Baird’s lack of Trek experience was worse than I thought, if this article is on the level.
http://www.denofgeek.com/us/movies/star-trek/248258/star-trek-nemesis-what-went-wrong
Nemesis is pretty maligned by the fanbase, and Baird, right or wrong, takes a hell of the light of the blame. I’ve always kind of wondered what the rationale of hiring him was, especially given that Frakes was apparently chosen instead of some bigger-name directors, on the last two.