It would love some measure of demand for an item or a measure of how quickly an item will sell.
For example: on Phoenix there are no Liks up for sale and the last sale was 2 weeks ago. I don't know if this is because no Liks were listed in the last two weeks or tons have been listed but no one is buying them right now. If there were a lot of demand for Liks, then I could work on filling it.