New and casual players will be conservative and only work with the safest currency(s) which should make the governments try to be as honest and safe as possible, if they want more players. Serious players will have another game to play: foreign exchange and arbitrage. The "craziness going on with scams and pirates and tycoons" would mostly involve the serious players.
I think this will bring players together because they depend on the same money. It would be huge force in the game that makes governments much more important. Alliances will involve financial issues. It would also help players see other governments and other players as "other" because they're part of a different system.
Wernstrom got a reaction from Yuu in What do people think of the current economic system?