It would be nice to see something like that. I was always wanting World of Subways to do Volume 4 as the NYC Subway, but since they already did the PATH, it seems highly unlikely. I have seen some NJT trains for OpenBVE, and there is one currently being built for Trainz, the BBL. There is one there already, but the newer one looks promising. I am sure that you will see an NJT Simulator sometime in the future, or a Trainz route. Even an OpenBVE route.