Six schools instead of three.
Five champions per school instead of one.
Well, I think you re-write book IV. Why not - this is what fanfiction is for ;) There have to be complete new tasks and I really am looking forward to it.
One question I have though: Will this be a Harry/many-story? No panic, I wouldn't complain - I'm a bloke -grin-
Hopefully until soon
PS: You know: English=2nd foreign language and so...