Some things I would mention, reviewing your image:
You have established so much light I´m wondering why the background part is so dark - there are also some very dark surfaces of the buildings in the foreground. Maybe there could be overall some more ambient/sourrounding or do you call it diffuse light that affects the environment.
much lightning also indicates a lot of activity (people are not sleeping) - maybe there could be more traffic in the air to give consideration to all the light.
If you would add some more little docking or parking zones in the background it would increase the sense of scale.
just my two cents.