[Sigh] You know perfectly well why. The exact same reason why Warsaw, Liverpool, Osaka, Budapest, or Thessaloniki are also not on this map.
There's absolutely no justification for Krakow over Warsaw on the 1700 map. I agree that we can have only one, but it should be Warsaw. Budapest should also be on the map, and one of Liverpool or Manchester would not be a terrible idea. We're not trying to create an ideal city set-up for the human player here, a point you seem to be intentionally and obnoxiously obscuring.