I'd be in agreement generally but the subway coverage is pretty dense with maybe exception to the far east/west ends. More trains per line is probably money and

I'd be in agreement generally but the subway coverage is pretty dense with maybe exception to the far east/west ends. More trains per line is probably money and effort better spent at that point. You still need roads for emergency vehicles and those that need to drive, so I don't think lack of streetcars will actually save a ton of pedestrian space. In an ideal world for sure though.