Satoshi has many enemy. So, I think he couldn't be come back
Really? Then why do you start such topics and ask stupid questions? You know very well that anyone can create any address they want and that it means nothing.
BTW, staoshi has been very successful in protecting his privacy and hiding his real identity so far. There is no reason not to believe that he would continue to do so in the future, even if he came back again, which is very unlikely.