I agree whith the castle developing proplem...In 1066 castles build by the normans in England for example where by wood.Mottes,keeps and finaly castles used a compination of wood and stone.I hope that in the mod programers will ensure a slower and realistic castle development compined a MTW way of development with M2TW one...Never the less the mod seems to be very promising!P.S.There must be a slower population growth in western europe provinces than the all the other ones to succed this development.