I do not have the background to fully understand money at this level.I do know we did quite well with out a national bank after Jackson shut it down.
I have however had that "Good money, bad money" theory explained to me and found it to be almost as self evident as the nose on your face.
In my opinion there is no place in a free market economy for a "National Bank" to do any thing more than hold the nations tax revenue, Seems like we are in far more need of a National accountant.
And I don't see why the Treasury Dept. does not handle all Govt money matters, it is pretty much their whole purpose after all.
As to the complexity of it, It would be simple if it were honest.
Here's an interesting pair of news stories though.
http://news.yahoo.com/s/ap/20101112/ap_on_bi_ge/obama_asiaMore at link ;
YOKOHAMA, Japan – President Barack Obama claimed a stronger hand on the world stage Friday despite electoral defeats at home, failure to get a free-trade agreement with South Korea and lackluster international support for his get-tough policy with China on trade and currency disputes.
"It wasn't any easier to talk about currency when I was first elected and my poll numbers were at 65 percent," Obama argued at the close of the G-20 summit, after bluntly accusing Beijing of undervaluing its currency.
http://news.yahoo.com/s/ap/20101112/ap_on_re_as/as_economic_summitsMore at link;
G-20 refuses to back US push on China's currency