This is the most compelling "who is Satoshi?" post I've found:
https://bitcointalk.org/index.php?topic=628344.msg48198887#m...
"I contend that James Simons put the team together that made up Satoshi Nakamoto and that Nick Szabo was the main public-facing voice behind the nym."
Why would he do that surreptitiously, instead of just being clear that they were working on it? Why wouldn't they cash in the million or so bitcoins that were pre-mined? How did they get the whole team to communicate in a unified style? How did they get everyone to stay quiet after Bitcoin took off?