It is possible, that Satoshi is/are reading all these bitcointalk contributions ... and although some pepole want him/her/them to come back, nothing happened.
Tell one good reason why Satoshi should come back. (good reason = improvement of Bitcoin)
Well, that is a good reason but I think it is not necessary because it could be his life will perhaps in a risk.
There are too many people who are claiming a faketoshi and for sure this will have a big controversy in all of those people who are claiming they are a bitcoin creator. Satoshi is a very smart guy if there is a chance that the bitcoin creator will come back I think he/she will silently develop the source code of the bitcoin into a better one.