I loved this idea too. Industrial settlements could get a lot of trade agreements from other city and also make it a commercial settlement. Militaristic settlements could be aggressive and attack settlements with a high commercial and industrial score to support their armies. Religious settlements could attack settlements with low religion score and high science score and make it more religious.
On this i guess there is a need for abstraction, else all the different kinds of social structures would need a lot of planning, analyzing and coding.
Consider this; A commercial settlement depends on other settlements to develop, thus the other settlements need to be generated first as the C.Set would probably be developed on a crossroads between other cities that do trade and have desirable resources.
Basically, unless abstracted, every city would need to examine the available resources, such as minerals, fertile ground, forests, strategical value.
How did it develop? Serfdom, slavery, freemen? Mercantile or free trade?
Religious settlements could attack settlements with low religion score and high science score and make it more religious.
Depending on URR's take on gods(divine dictating vs clergy politics), unless a theocracy wishes to expand and conquer, they rarely engage in hostile activities unless theres unrest at home. Whats better than a holy war for eternal glory to help those pesky plebs forget about the high taxes?
And i assume that this is a standard fantasy world, meaning that a science attribute is rather mislabeling. Technological advance would be to have sewers, aquaducts, irrigation and such things, rather than the Christianity vs free thinkers that you seem to envision.
URR, If you have time and interest, i suggest reading Malazan books of the fallen series by Stephen erikson
http://en.wikipedia.org/wiki/Steven_EriksonIts a good source for ideas.