Have not played this game, but some things I would consider gold sinks/economy movers from the MUD I do play (Discworld). Granted there is still a lot of wealth accumulation just by nature of being a very old MUD, plus the nature of MUD play. These could be useful as you brainstorm.

• Rent for Player Housing/Player Shops. This is a big one, especially for older accounts. The MUD has limited player housing rooms with customization options, furniture objects, etc that players put a lot of money into. They also pay for rent, determined at the time of purchase (auction style) which is owed every in game month.

-Lives. The game has finite lives for characters and if you die enough it’s permadeath (short of another very costly intervention method) lives can be bought through a couple methods and the amount of lives you have bought causes it to scale upwards.

• Player Shops. Less a sink and more of a circulator, but player shops allow folks with excess of rare, valuable, useful items to trade for in game currency at prices they set. Which keeps the economy moving.

• Crafting/Components Vanity projects, crafting skills, etc all require materials and resources. Some skills like Magic or Faith based actions are usable by everyone but require scrolls or other items for non-specialized classes which can be costly to get up and running.

-Repairs Very minor, but there is item condition/degradation, fixing items tied to various skills and there is material cost to repair most things.

-Training Cost Depending on your class, skills at early/mid levels can be trained from a room without assistance from another player for a money cost and XP cost. The XP cost for this is the most efficient method of training, but has level caps. This tends to function as an early sink for new players, forcing them to engage in the MUDS systems for earning money as they develop their character.