Pretty irritated at the no Dumbledore back-story, no explanation of Arianna, glossing over the deaths, Hagrid (or the lack of Hagrid-ity in general,) but when I look at the movies, and the overall story, I feel like they addressed what really mattered. Percy coming back showed the ultimate solidarity of the Weasley clan, but it didn't really affect "Harry's" story. And, let's be honest, the movies are Harry's story.
For those that have yet to read the books, hopefully, by us saying that there's so much more in the books, they may want to seek out those other bits for themselves.
Now, I have to say that I only ever cried at HBP (the book) when Dumbledore dies. Never at the movies. I cried at this. And not at parts that I thought I would. Obviously, Snape's memory - he played the heck outta that part. Whoa. But I was really moved when Harry gets ready to confront Voldy, and he's surrounded by the people he loves that have passed. They did an amazing job of cinematizing the concept of confronting death calmly. It showed what Rowling believes, death is a journey and the people we've loved and lost will be right there to greet us, comfort us and finish our journey with us. Yup. That turned on the waterworks. My cp wasn't affected the same way by that part, but she's never lost anyone close to her and I think that made a big difference.
One theme that I'm very glad is so strong in these movies - directed by males, adapted by males - the concept of Mother's Love. And Molly Weasley kicked booty!! I might just have to change my avatar for her :)