I was listening to Episode 11 of Improvised Radio Theatre with Dice, and was struck with a new D&D premise that I'm going to scrawl down while I can remember it.
The topic that was brought up was economics - specifically, how the gold price crashed in Spain when looted gold was hauled back by the ton from South America, coupled with a remark about how when governments feel hard-up, they tend to cut spending and consider starting a war. This was put into context with the way adventureres haul gold out of dungeons, which should really destablise economies in much the same way. My brain rattled around briefly and then settled on an idea: what does this do for adventurers?