Very impossible. If it happens that Satoshi Nakamoto reveals himself in the world then he accepts his death too (not talking literally) but the problem is, he seemed not interested with any popularity or fame, if Nakamoto is after the fame then he should have revealed himself 2 years ago.
Not sure what is with these death threats and what did he do to get these threats, it is evident that Satoshi is not looking for fame and if he was looking for that he would have revealed himself long back and even now he is able to reveal his identity but he is not willing nor interested in coming back to bitcoin and its development, if he comes out he will get laurels and there is no doubt he will be considered as an influential person because his invention help create a new market and it is not a small development.