I'm glad it's working for you.
That doesn't change my point in any meaningful way, though. The suggested mechanic doesn't really add anything meaningful to the game. It's another way for those who already have money and power to sit around doing nothing and still accumulate yet more money. What does this add to the game that will give the majority of the players more to do, have more fun, and keep playing? "Your men bring back 300 gold from their looting efforts. Your army liaison confiscates half of it, which is to be delivered to your duke, who hasn't left his estate in three years."