This is a very intriguing story and your take is one that I'll follow. I also like the pacing you've given Harry & the girls. Course a group this big makes things hard for a writer to keep everyone in even for one or two lines.
Love the addition of Luna and hope she become a dynamic as much as it seems Hermione Milli and Susan are in the group!
I suggest a powerful feminine mascot to rival the other houses should be done within the 2nd year, and I wonder of Narcissa is the only Adult woman who want in the harem house!
dennisud