OP a bit short on detail, need to nominate a line(s) and make a case why it would be commercially successful. Although I’ve never ridden the NYC Subway I dabbled with the routes in BVE also WOS4 though that was another woeful TML/Aerosoft offering. Something like the lines out to Coney Island or Rockaway might be a good choice give a decent long run. The key here is whether DTG can obtain a licence and official blessing from the Subway operator who might of course have security concerns about depicting accurate operation of their equipment. But with MN and LIRR in the game, we do need the Subway to complement that.
I don’t wanna put too much detail because I know for a fact nothings going to happen I put in tons of detail before, and it gets ignored
Would love a NYC Subway route. Even better… set it in the year 1979 so we can see a big red spray painted “W” somewhere on Coney Islands Subway station. Now that would be the best Easter egg ever .