I find I can't play for more than about 40mins without a crash at the moment. Given the demands of my job and personal committments, this reduces my ability to give meangful feedback - bigtime.
I don't think there's anything unique about my crashes but I'll keep looking to try to find something that isn't reported yet.
All I can say is, the economic system is starting to take shape. My expansion is limited by resources (gold) which is an improvement on earlier builds.