1) A more developed trade system with caravans/tradeships and the like...You ship resources to far away places and could get more gold the further you take it /the rarer the resource is.
2) A mercenary unit. Would be 50% extra the normal price and would disappear after 1 non movement actions.
Mercenary warrior would be 15 shields. You send him into enemy territory and he then destroys a road leading to the enemies saltpeter resource and then disapears.
But if the merc is attacked he then "tells" them you sent him and it would hurt your rep really bad.
2) A mercenary unit. Would be 50% extra the normal price and would disappear after 1 non movement actions.
Mercenary warrior would be 15 shields. You send him into enemy territory and he then destroys a road leading to the enemies saltpeter resource and then disapears.
But if the merc is attacked he then "tells" them you sent him and it would hurt your rep really bad.