no doubt the idea is really great, the context isn't right i must agree.
but what is to learn is how to see loopholes when others see none, well thats what hacking is, be it ethical or not. To see it from a totally different point of view....

Tell me indiansword, how did it occur to you? you thought of it or you got to know about this exploit?

ps - that "white hat player" tag doesn't really go with this post you know, as a white hat, you would have reported it to microsoft, its more of a grey hat i think