I stayed through about half of the credits and didn't see any easter eggs. I agree with your verdicts on the actors. I felt vaguely unsatisfied at the end, as if some piece -- maybe a moral center -- was missing. Or maybe I'll find it on a second viewing. There were a couple of things I wish had been better set up in terms of character but oh, well.

2D worked just fine for me, too. Fie on 3D!