That surprises me not at all! I just went back and read your post. It's funny that you mention wishing we'd seen what was happening at Hogwarts, because I certainly agree that would have been the more interesting story. But I've already read that story of course; you wrote it. :P

Bellatrix/Hermione in the movie certainly seemed like sexual imagery to me, I'm not sure how else one could view it? She's lying on top of her! I imagine that might have been disturbing to people who don't like that sort of thing...