I was wondering exactly what the system will be by where the culture of a province shall begin to change to match that of its conquerers. This occured historically throughout much of the Middle Ages, most notably in Germany and the HRE and was still going at the time of the game(I believe).
Hopefully, should this feature be implimented, it should take into consideration the population of the province, religion, and its relation to other provinces of a Kingdom. For instance, it would be likely that the German culture could expand into Eastern Europe if they hold a great deal of provinces there, but it is very unlikely that London should suddenly go Celtic; even if an Ui' Neil is ruling all of England
Hopefully, should this feature be implimented, it should take into consideration the population of the province, religion, and its relation to other provinces of a Kingdom. For instance, it would be likely that the German culture could expand into Eastern Europe if they hold a great deal of provinces there, but it is very unlikely that London should suddenly go Celtic; even if an Ui' Neil is ruling all of England