there should be player auction where players could put their items for sell (gold or pc) because in bazaar you can only sell few item and from expeditions you get lots of the same item you could sell it off to other players who need it more and at the same time the gold in game may get more value like selling items worth pc for billions of gold.
I was thinking that it would be good if there would be possibility to make generals into troops, because there are lots of same type generals, so if there would be item (something similar to runes) that would allow general to be converted to troop with some effect like taking off the bonus it gives.