I thought, too bad you can't loot money off corpses. but then i thought up a good idea, why not make an item, that when a person died, they'd have on them, (like food stamps) and then you take the "money stamps" to a trader and you get money for it? It could be made that different groups/factions would be richer/poorer (duty/bandits) and you'd randomly get an amount when you loot them.
I will try to make this now, will post results.