So I just rewatched Inception all the way through for the first time.
It really holds up well on second viewing. There is a lot in the movie that deepens when you already know the full plot, and not just pathos. There are a thousand little touches, not just telegraphing the future but playing with it and playing with the audience. It's a very, very good script.
Jonathan Nolan is definitely the brains in that family, but Christopher did a beautiful job with the screenplay here. I recommend a second viewing for anyone who wasn't completely dismissive of it the first time. There is lots more to get, particularly from Mal.