It's really hard, sometimes, watching these very intricate books be crammed down into 2 hours of visuals. One of the greatest shames (and my biggest complaints) is NOT ENOUGH SNAPE.
I mean, really - Snape is *such* a pivotal character in these stories, and so intricate a personality, you'd think he'd get more than 10 minutes of screen time. And Alan Rickman does an incredible, amazing job of maximizing those 10 minutes...but there really ought to be more.
That is all.