Would you be 'hiring' yourself at your current cost from whoever owns you? Sorry just trying to get what you're saying right to make sure I understand.
If you're going to save up the gold to hire yourself, why not just use the gold to hire an ally instead? I don't see how being able to hire yourself adds anything to the game. It sort of undermines the ally system. You hire allies to increase your stats...you don't hire yourself. You get the 2% whether its yourself or another player, but hiring yourself doesn't really make sense...e.g. As you said at the beginning, it's like sending over a mercenary to work in other kingdoms. You don't hire yourself to work in your own kingdom. Also, there's a only a small part of the community that don't have owners anyway. Please correct me if I have misunderstood your concept. But I don't see the point in hiring yourself when you could just hire another ally. It's the same thing really.