I don't know why I didn't think of this earlier but did the fact that Draco couldn't see the thestrals make anyone else change their view of Malfoy? I used to think he was destined to be a death eater and had been trained in those sorts of things, possibly seen his father kill someone, but when he doesn't see the thestrals it made me think. He's not seen anyone die, he's been shielded from that so far as well as Pansy, Crabbe, Goyle and the other Slytherins that couldn't see them either. Could this be JKR hinting that maybe not all Slytherins are bad? (which I thought anyway, but she's led us to believe otherwise) Or a hint that maybe sixth year will see some Slytherins joining the D.A. and going about that working together/unity the sorting hat said was so important? I'm not saying redeemed!Draco or even friendly!Draco just I'mdoingthistosavemyownass!Draco. No doubt his father's arrest will have a major impact on his decision.