Hmm, a cut-away scene showing Dumbles aggitation as his monitors of Harry show him no longer at 4 Privet Drive and, then, unable to locate him at all would be amusing. Depending on just why he put Harry there, it could also leave him very worried about who might, instead of him, be influencing Harry.
In the future, I wonder with Hermione; would enough predjudiced behavior against her by Purebloods of both Light and Dark persuasions open her to the Dark Side? I could see her being a real asset for powerful!Sith!Harry.