The only mod used was the moneybar which should not be a problem, I don't think. I am not using any combined mod. Although it crashed with my own mods installed, it has also crashed with no mods installed.
Also a note is that the game actually *closes*, it doesn't crash, since the last line of metro_log.txt is the usual closed metro_log.txt.
The problem should be with the airport because I have tested a version of the map with the airport AND without the airport, both without mods, and only the only with the airport crashed.
I don't understand what you mean by the taxiways being too close together in pic 4; all the taxiways there are the same distance from each other. Do you mean the "deicing pad" taxiways? Those only look close together as there is pavement placed between them to emulate the appearance of deicing pads. Those taxiways all still have 8 squares of space between then, same as the dual parallel taxiways for the runways. (Also, the default Haneda airport in the stock Tokyo has a section of dual taxiway with 8 square separation.)