The new estate systems will allow a lot more food to circulate around in my opinion. Some time ago Morek was a large producer of food surplus and traders were quite involved (there were on the other hand no caravans yet back then), but now I can't think of any realm in dwilight who has enough surplus to safely sell it around.
With the new estate system and a lot more rural regions taken and kept at high production, I hope there will be a lot more trading around.
