The price will definitely go down, once Satoshi's real identity gets revealed. < If he is still alive > You have to remember that he still owns loads of unused coins. < about 1 million > and if people see those coins moving, they will expect a dump and they will start selling even before those coins hit the markets.
Satoshi's identity will also create uncertainty and even anger, if he is linked to crime or dirty deeds. His nationality and association with specific agencies will also have a influence and people will quickly audit every aspect of his life. He will also become the target for lawsuits and even attempts on his life or even abduction by criminals for financial gain.
Let's just leave Satoshi alone, we are all Satoshi now. ^smile^
What if this guy is already in jail in some country? We never know...
About the million coins, he's the owner, he can trade if he wants but I doubt that he will do this... He never spent none of their coins?
About "we are all satoshi", we should make an "Satoshi mask"
That's true, bitcoin as a coin of creativity and innovation. Whether Satoshi is alive or dead or in jail, he had given life to lots and lots of common man. As mentioned one day every user needs to be masked as Satoshi to give respect but to make a mask none knows the real face.