I am former resident of Moscow and a current resident of New York. If I could take one thing out of Moscow and bring to NYC it would be the subway. An impossible dream, but what we actually can have though is expanding our NYC subway at a rate anywhere near Moscows. Moscow added 80 stations to its subway since 2000, including 26 stations on a new circular line [0]. New York added 5 in that time [1].

[0] https://en.wikipedia.org/wiki/Expansion_timeline_of_the_Mosc...

[1] https://en.wikipedia.org/wiki/Proposed_expansion_of_the_New_...