I'm really impressed by the way that even though basically every fan theory ended up proving true, it never felt like a letdown when you had that moment of confirmation. Everything was so elegantly laid out, so earned, that even though you knew what the puzzle was going to look like, it still felt satisfying every time a piece clicked into place.
They had one great misdirection up their sleeve, though, and they pulled it out just at the right time. The realization that Maeve's awakening was a red herring all along, that every moment of supposed free will she thought she was experiencing was just a programming trick, that she was never more than a pawn in someone else's endgame. Heartbreaking. And it calls into question every future instance of apparent independent consciousness. The show is taking great pains to make the point that everyone, not just the hosts, is merely playing their part in a story much greater than themselves. I think, moving forward, the core question of the series becomes less "can a robot exhibit free will?" and more "is there such thing as free will?" And then the issue shifts from whether or not a robot can become like a person to whether or not there's a fundamental difference between the two in the first place.
And yeah, the piano/violin version of "Exit Music" was absolute perfection.