If you want to check out the blog posts with the extensive look at the designs for an officially licensed Harry Potter RPG that never came to be, just follow the links below...
You can read the first post, "Adventures in a World of Magic" here:
The second week I looked at the product itself in more detail, looking at how the game would look like a Hogwarts textbook, and immerse the players into Harry's world by keeping the feel of Rowling's brilliantly envisioned setting.
You can read the second post, "Of course it's happening inside your head, Harry..." here:
The third post really got down to the details of the game system and how it works, looking at the character sheets, stats, how the dice are used, and how simple mechanics can maintain the feel of the wizarding world, and suspend the belief of the players.
You can read "It's our choices, Harry..." here:
The fourth and final post looked at the supplements that could be produced for the game, expanding the potential to provide players with endless possibilities that will keep players of all ages playing for months and years to come.
You can find the last post, "The mind is not a book..." here: