Three minor quibbles, somewhat vague to avoid spoilers (you really want to see this movie cold):
- There are a handful of scenes where security procedures seem unnecessarily slow and complicated, to give other characters a chance to circumvent them.
- Another character witnesses a shift in loyalty, but it's never mentioned.
- And finally, the movie doesn't so much end as stop. That's a particularly annoying trope for me (it's why I don't read Neal Stephenson anymore).