Please include a tax collector available for purchase!!
A tax collector would be great! Maybe have him collect taxes for all the homes, then have a higher level tax collector for businesses. They could be paid with part of the profits. It is really tedious to go from house to house and building to building. I have two kingdoms with several different realms. I get to the point that I get really annoyed. That's one of the main reasons I don't play as often as I would like to. It's too much tax collecting. There were plenty (ruthless) tax collectors in medieval times! I would pay $/mojo for that....
If I'm understanding your request....wouldn't the harvest orb work for this?