https://www.youtube.com/watch?v=GvgTivwzcuoHe presents an interesting take. I didn't watch it all, but two early points.
He notes that the DAO *is* dead which is, of course, a pretty epic f-up.
He notes that there are only so many people who could have done this, 500 approx, meaning the hacker is not an outsider. I find this bit more worrying than anything else.
I'm an Ether holder btw so for me it is important this attacker is revealed pretty soon.