Well, I think he should. Whether he does something or otherwise to the codes, his return will certainly give the boost in the level of confidence. Probably it sends a message that somehow the developer is still around to support the coin. Indirectly, for others it will give the impression that, there would still be hope.
People will be more confidence with him returning here but there will be a lot of threat to him . I think that he is still here, probably in contact with some of the member of bitcoin foundation and giving advice to them but to return as himself, satoshi, I dont think he will ever do that
Why would anyone be any more confident? satoshi is essentially powerless to do anything really. In fact, if he did return it would probably give people doubts or worry because they might not believe its him but if it is then there's an issue of what hes going to do with his coins. At the moment they're stagnant but if he mysteriously comes back to life then he may want to cash out his coins too which could lower or crash the value if lots are released onto the market.
With all this debate about the fork, satoshi is the creator of bitcoin and that means that he knows the best of it. With satoshi around, people will be more confident about the future of bitcoin because he know what the best for it and people that are not agree with the fork will now have some thought if satoshi explain about it because he know what the best for bitcoin
