Shredder question possible spoilers
 

If Sachs is really just a front for the real Saki would they really keep the actor playing Saki a secret and go as far as omitting him from the list of cast and crew on sites like imdb?

That would be very dope. But could they actually do that.

Well there has been a Mr Chang's Translator cast but there still isn't a Mr Chang. So I wonder if there might be roles that they don't list in order to try and surprise us with something.

That theory seems to resemble the Iron Man 3 Mandarin twist a bit too much, although to a reverse effect. I could buy it though.