Nice. I see that my humble Sutphin/Archer and Jamaica-Van Wyck objects are getting some good reuse. 
Though if I may add a bit of commentary, the color bands on the walls at Canal, West 4th, 14th, 42nd, and 23rd-Ely seem to be a bit too high. If anything, they ought to be around the same height as the color band at Chambers (or the height of those at Spring Street in 23rd-Ely's case).
I see what you mean, I'll try to fix it.
At WTC there's a staircase at the end of the platform not that room. the room is actually behind the stairs but via track acceess
I'll check to make sure about that. If so, I'll fix that too.
Whats left to add? 
Amazing work 
Is this error46146's E?
A bunch of stuff left to add, but I'm not going to list it, that might take a while.
No, this is not error46146's E, as that is going MANHATTAN-bound and mine is going Queens-bound. I made this all from scratch (besides objects and things).
As for everybody, thanks for your appreciation!
