Problem:

Its just too much. I can place my sov (or a child of my sov) in a monster spawn area and make more money in a single fight than my entire empire produces. Current game my towns give about 200 gold per round, a fight can easily give 200+ gold. This completely imbalances the gold heavy units (like dragons).

Suggestion:

Reduce it to like 1/10 of its current value. This would also make Thief profession a little bit more meaningful. As is it doesnt matter if i have 30k gildar or 40k. Cant spend them anyway (unless i pay for the treaties of course )