I was thinking it would be good to have Subway and Subway Type routes for Train Sim World 2 like Port Authority Trans-Hudson (PATH) System for NY and NJ with the St Louis Painted Aluminum PA1 and PA2 The Painted Aluminum Hawker Siddeley PA3 all the Stainless Steel Kawasaki Cars from the PA-4 to the PA5 along with work trains an also go through the Reversing process when trains Terminate at Newark Penn Station with surprise guests from Amtrak and NJT. Another add on would be the consist Mix of PA2s, PA3s and PA4s.
Personally I would love to see a PATH route set before 2001 so there can be a recreation of the old WTC PATH station. An undamaged car of the last train that arrived at the old WTC station is preserved, unchanged from that day, in a museum so there is an excellent way to get access to the locomotives for reference.