Coming now from a slightly more rational point of view, I can see the areas where I wish the film had accomplished more. Particularly when it comes with emotionally engaging us with his characters. I think this, generally, is an issue of Nolan's that's usually pushed aside because his films are so intellectually satisfying. This is absolutely one of those cases... You get a sense of Cobb as a man through the dissection of his mind rather than his expression of those moments. I can forgive this because it almost seems Nolan's style at this point. He's much more interested in breaking things down and showing us the pieces to make us think than really dragging us into raw emotional territories. To that extent, I would probably say The Prestige is the only Christopher Nolan film that has extreme emotional resonance, but its also one of the reasons that The Prestige is a lesser (although still damn good) film than the Batman films, Memento, or Inception. It's not his strongest suit as a director, so he works around it. I would say that this is a deliberate choice, but it's still interesting to look at.
The second thing isn't a critique of what's in the film, but rather, what isn't. I frankly expected more surreality, and less of a rigid rule structure for the dream states in the film. I'm kind of glad he handled it this way, because to pretend to have a real handle of how dreams work in a Lynchian nightmare sense would have destroyed any potential for there to be a real structure to the plot, let alone such an intricate labyrinth like the one Nolan constructed here. Many critics have been jumping on this point, having wanted this film to be Nolan's leap into something completely beyond his previous works, rather than a culmination of what he's been building to with his film career. I forgive it because its clearly him knowing what kind of movie he wanted this to be, which is a psychological thriller with an action bent, rather than him trying to make an art-film that's more about the nature of reality. This film doesn't have much to say about what dreams mean, they are basically just another level of the same reality, only more malleable. And it works with that elegantly.
I maintain my 10/10 scoring of the film, because it is exactly what it was trying to be and it succeeds on every level. If anything, he should be lauded for not trying to reach beyond his grasp. Ultimately, this is a heist film, and a wholly original psychological thriller, and it succeeds on that level in every regard.