This just came into my head today. What I love most about the Harry Potter books is the setting. I just love the wizarding world to death, and I'm sad to have no more books to expand upon it. Well, why not do it myself? I'm thinking a point system superficially similar to the Storyteller system. The games focus would be on telling new stories with new characters, with the system being equally well suited to staying in Britain or leaving for new countries. I like the Britain of the books, but at the same time I want to imagine what the wizarding world would look like over in New England or Mexico or Germany. My own personal preference would be to run games for groups of aurors, but I don't see why someone couldn't do pretty much whatever they wanted with their group.
I know how I want the system to play out. It's levelless point buy, with magic being seperated into the groups you see in the books. Each group is improved independently of other groups. As a general rule, you can cast what you want so long as you know how (some of the more powerful spells have a requisite skill level in the spell group they belong to), though if you run around throwing avada kadavra's everywhere the local magical government will respond.
What I'm looking for is advice, any issues that come to mind, ideas for new spells, magical items, or magical creatures from outside Britain to add to this RPG, and so on. This is a spur of the moment idea, but I think it has enough merit for serious consideration.