I'm interested in discussing the world Eliezer has created. Its alternate in obvious and subtle ways. Obviously, in this world both Harry and Quirrelmort are rationalists, but lots of other elements have changed.

-Dumbledore seems more changed by war than his book incarnation, to the point where he is making some obviously bad choices that have impacts on the school -The school is a more dangerous place than it was in the books. By this, I mean that in books 1-4, despite some hijinks, the actual danger was pretty darn low- in first year Harry had to actively try to get into mortal danger (ignoring some deeply unsubtle assasination attempts by Quirrel). In particular other students are never a danger to each other, yet theres a strong implication that here fights really can escalate- or at least that was the attempt with the Heromione arc. This is probably due in part to Dumbledore's approach (I don't believe that the 'Dore of the books would have tolerated such an escalation at all), and the beefing up of Slytherin house, and the Malfoy's in particular. While Lucius Malfoy was clearly a powerful individual in the books, his manipulations were fairly clunky, and nowhere near as subtle as portrayed here.

I think I need to have it in my head that many of the characters are subtly different here, because sometimes I read their portrayal as mocking the attitude in the books, and while sometimes that IS whats happening, sometimes its just because the characters aren't quite the same.