Yeah, it is very interesting that Steven Spielberg is there! Praise goodness the HP franchise didn't fall into his hands. According to
Screen Rant, Spielberg wanted to condense the HP books and create an Pixar-esque
animated franchise. BLECH!!
I have a theory...Maybe Speilberg just happened to be on-site for follow-up meetings regarding the IOA Jurassic Park expansion. After all, the Jurassic World movie will be released in 2015. So Spielberg just stopped by Diagon Alley to see what all the fuss was about...
http://screenrant.com/harry-potter-steven-spielberg-rothc-86780/