[Submariner]

What about allowing development over the several blocks worth of land where the ramps to the terminal are located? I would have to imagine that said land could fetch an enormous sum for the PA, even if developers had to pay to sink ramps that rose above ground level.

The idea about expanding rail is good, but how would it be done? The only way the city could really expand rail travel would be to add lines and rebuild stations (I'm looking at you, Penn Station) which, as we all know, would take decades and cost tens of billions of dollars, and probably wouldn't be done right anyways.