This makes me wonder whether we should get rid of hurrying production altogether. It is an abstraction well suited for Civ where there isn't an economy as detailed as Colonization, but seems out of place in Colonization. All raw materials in this game come from somewhere. Either purchased from Europe or built by your colonists. If you hurry a building, or a cannon, where do the raw materials come from? Instantly transported from Europe? Thus bypassing the whole aspect of the game involving transporting goods. Or purchased from a hidden section of your domestic economy? A magic buy now button seems to just bypass most of the mechanics of this game. If anything I could see spending money to make your existing workers work a bit faster (pay for overtime, incentive bonuses, etc). Either limited to carpenters or, perhaps, extended to all workers. Give just a percentage bonus on production for X turns. Could be a neat new mechanic that could be modified by civics or founding fathers. But having raw materials instantly appear just seems like an odd fit.