Smart of them not to do Percy Jackson. They would've of used movie photos and he movies sucked. And if they had used movie photos I would have been yelling at my phone all about how bad the movies were for about an hour.
J.K. Rowling regrets Ron and Hermione's relationship (this is interesting. Not sure if I agree or not. Always thought it was a bit refreshing to not see the "obvious" pair-off of Harry/Hermione as main characters AND romantic duo but what do I know?)