Okay, I finally finished this evening. It took almost as long to read through this thread as the book, but there are some really interesting thoughts.
First, I said either Hermione or Dumbledore would die in this book, and was leaning far more towards Dumbledore, the Hermione thing came from someone else. It was his time.
I don't know why in particular this was true, but I was far less emotionally invested in this book than in the fifth. I cried for 30 minutes after book 5, and the end to this one, though I was certainly hoping it wouldn't happen, seemed a little more predictable and, for some reason, I was okay with it.
I think it would be extremely hard to have the book not take place largely at Hogwarts. I always found the stuff that happened somewhere else less interesting anyway, I just wanted them to get to school. I hope something ends up happening there. Plus, like Plum (I think) said, the structure would just be too different from the other books.
I don't know how I feel about Snape. Even from the early "Unbreakable Vow" chapter, I still wanted him to be good, if only to prove Dumbledore right. I'm kind of hoping the Snape is good theory is correct, it would certainly explain why Dumbledore pleaded for his life when he'd called death "the next great adventure" (or something like that.) I do think, however, that he could still be pleading not to be killed not because he didn't want to die, but because he didn't want to leave Harry, therefore not pleading for his life, but for Harry's.
Why do we play with fire?
Why do we run our fingers through the flame?
Why do we leave our hands on the stove, although we know we're in for some pain?
-tick...tick...BOOM!