I just gotta disagree! The oft-mentioned lead characteristic of a Hufflepuff is loyalty, and one thing this book showed (for me, at least) was that Hermione was, without question, the most loyal friend of HP's, without exception.
I actually think that Hermione is the perfect blend of the lead characteristics of the four houses. Clearly, she's intelligent and brave. Definitely loyal. She has also proven herself capable of some masterfully cunning quick-thinking, throughout all of the books.
I know a lot of freepers would have liked to see her as a Transfiguration teacher, but I think she would have made the perfect Hogwarts Headmistress.
I agree and was somewhat disappointed that didn't happen. However, none of the professors or Headmaster/mistress's seem to have had families of their own. I'd rather see Hermione (all of them, really) with a family.