Maybe... but that's what people said after the primary elections and it wasn't toned down much. At the end of the day, Trump is a nihilist and an egotist that feeds of off the passion of his supporters. "Trump" the persona is what fired up his supporters and is what won him the election. I think he will stick with it.
Yes. Were you paying attention to the rhetoric that got him elected? A lot of it, if taken literally, was literally impossible. It worked, but it shouldn't be taken too seriously beyond that. Will he have some interesting policies? Yes. Will he follow through on many of the crazy things he said while campaigning? No.