Nope. It would finally put any doubts to bed but I don't believe it will ever happen. The idea of someone like Satoshi handing over his wee driving licence to sign up to Coinbase is about as likely as Donald Trump organising a photo shoot with him wearing a nappy and playfully wrestling leathermen in mountains of bubbles.
The minute those coins start moving he has tons and I mean TONS of governments looking into every single transaction and trying to find out who he is. I can imagine a million coin dump, the super cheap buy orders in would fill.