I am mainly disappointed with the economic system: seeing the goods you are selling drop in price WHILE you sell them is quite ridiculous (IMO, price should decrease later on, as a result of demand/offer equilibrium)... and anyway I still find that there's plenty enough cash to be raised in the game without bothering trading goods, which is a waste in my opinion: it would have been splendid to alter the power balance by carefully wrecking one city's economy or by imposing embargoes on cities and nations, which would have given a totally different flavour to the merchant characters.