Unknown — he might try to use the office to rebuild the city into his vision of a white utopia, which will tear the soul out of it. What he THINKS is good for NYC (other than infrastructure spending, which would actually be good) might not actually be good for NYC.
I heard Berlin was a nice place after they kicked the undesirables out of it, built a bunch of big buildings, and made the trains run on time. (That is, before it got the snot bombed out of it.)