All cities of more than 50.000 inhabitants will probably be urban in the mod.
Okey. I thought more in line with some kind of decision when you decided the map layout that X and Y province will be urban, Z will be hills, etc. But it's a quick work one layout is decided (50 urban pics takes a evening to make, so no big work) so if you want some later on, I volounteer to do that task.