Well, I'm always a big fan of the blurring of these clearcut good/evil categories in Fantasy. You can see them interacting with each other, discussing and well. They are no longer just anonymous caped figures. I love the way Voldemort and the Death Eaters are portrayed in this movie.
HP7 can take time to explain and introduce all the characters that are necessary to the plot. However, I must say it was definitely a wise decision to split the 7th book into 2 movies. But HP6 was such a patchwork of scenes that didn't give you the feeling of a coherent work - I was afraid the even more complex story line of HP7 would make an even less coherent movie. I guessed it would be darker and scarier, as every HP movie has been darker and scarier than its predecessor. After having seen HP6, I honestly didn't have great expectations in this one.
