Also, I'd prefer if we could keep the center of the subway tunnels on X/Z intervals of 25(50/100/175/1325). Obviously the exists to homes will not always match up 100% but work over to the nearest 25 for some sanity and consistency.
so 35 Y/high, on intervals of 25 NorthSouth/X EastWest/Z (at least I think that's right, maybe that's backwards)