What if everything was flipped from what you know?

Just imagine as the title says that everything is different. Nice Malfoys; Slytherin Hermione and Nevile; What's with the technical two Professor Snapes? Just as few of my surprises in store for you; first fanfic. You can flame if you want but I won't really care. I'm American and I write as such. Rated M just in case; absolutely no slash. Typed in word.