Some culture related issues

I'm currently having a look at the text files. I kinda found out how to change generals and characters models on the campaignmap, but I'm having problem editing the settlements' culture.
I'm trying to make Dacians and Iberians settlements looking like hellenic ones, but it looks like settlements' models are linked to the culture, and not to the faction.

Any one got an idea about this ?

Correct unfortunately. The appearance of settlements on the campaign map is defined, by culture, in the file Data\descr_sm_settlements.txt