I thought of an idea that due to NEC: New York unable to come to preserved collection. Meanwhile I thought of suggesting the North Jersey Coast Line between New York Penn and Perth Amboy which is roughly 30 miles with the ALP-46 locomotive and the Bombardier Multilevel Coaches. The reason I'm talking about NEC: New York is because the section between New York Penn and Newark Airport was in the said route so adding this route would partially bring NEC: New York back to TSW2 also by adding Amtrak services as drivable layers from Boston Sprinter for services between New York Penn and Newark Airport with AI layers from LIRR at New York Penn.
You can only run Amtrak services between Metropark and NY Penn. Because Amtrak doesn't stop at Rahway
I was also considering changing the suggestion, change it to NEC: New Jersey and terminate at Trenton instead while still going to New York Penn because it would give a chance to add Acela Express finally to TSW2 as they stop at Trenton.