Heh, I thought this was a fascinating introduction of Harry to Hogwarts, on all sides. I quite suspect that Dumbledore is not going to appreciate the independent, capable, and knowledgeable Harry he's faced with. I rather suspect that situation, combined with lack of access to harry's rooms, is going to severely annoy him. Somehow i reckon taht's just the start of his problems.
I like the way that Hermione, Susan, and Daphne have identified with him in their common dream. i suspect Susan and Daphne will be approaching him reasonably quickly under the circumstances. 'twill be quite interesting to see where that leads.