Two, gold is given to characters, not positions or places.
I am indeed not a fan of the idea of the royal treasury, because I think the pocket of the ruler serves that purpose quite well.
However, I like the idea of a food tax that pushes some food upwards in the same way that the gold tax pushes gold upwards, with the banker as the final recipient. The problem is that the banker is not necessarily a region Lord, and therefore has no place to put the food in, so a new building would be needed.
