won't be conclusive
I think you hit the nail on the head here.
Adam Back is as good of a pick as any of the usual suspects. The only reason I lean against HBO picking him is because he's evidently interviewed in the show. I really don't think he'd be in it if they were saying he's Satoshi. If he was going to say that, would this be his coming out party? My guess he's just interviewed but they'll name someone else.
Here's the trailer:
We shall see.
Oooh. I didn't watch the trailer or else I would have thought a little less about Adam Back. But let's see how it goes. It would be sad if this turns out to be just another speculative stuff that doesn't prove the identity beyond reasonable doubt.