This poster looks amazing. I say we all write Rowling and suggest/request she write this book and allow Warner Bros. to make this movie. Her publisher's address (which she requests we contact her through) is this:
J.K. Rowling
c/o Bloomsbury Publishing
38 Soho Square
London W1V 5DF
United Kingdom
-or-
J.K. Rowling
c/o Scholastic
555 Broadway
New York, NY 10012