Nice.
I'm looking forward to finding out whom Harry's working with. And, of course, to watching the further progress of Harry, Hermione, and Luna's relationship, but you probably figured that out already. ;-)
Dumbles' attitude is amazingly clueless, but it does fit with canon. I'm amused at the idea of Harry's mentors making bets on his true intentions.
Ron/Romilda is amusing and appropriate. They seem to actually be good for each other.