I'd rather have more money to buy stuff with. Since he isn't adding new wepaons and such, mostly concentrating on new ideas, I'd suggest new ways of making money. Like:
Duelling
Criminal Catching Reward
Quest in Volcano
Bank and Interest (1%?)
Selling Old Items for 1/2 Price
Printing Press, The oppurtunity to load documents into a store. People purchase them, and you get 20% profits
Criminal: stealing from banks and poisoning weapons
Firefighting
Spell scroll crafting
Horse husbandry
Potion Brewing (You can only sell them, you can't use your own potions)
Also, putting Port Town underattack by invaders and setting it to a PvP zone durring certain times of the day and blocking new account formation would create an interesting "Defend the City" mode. People get paid depending on kills. Stopping new accounts keeps new people from joining and becoming an easy target.
The ability to pick mushrooms, and they give you abilities when eaten would be a cool idea too. Some are deadly, so you might just want to buy them from the Starboard Town apothecary.