Alright people, get back on topic, or I won't hesitate to bring out the banhammer again
(I'm looking at you Dommy (your already banned, but this decreasing your chances of getting back in), ilduce, and Math)
Now, as for the rules, I was going to explode about how complex it was and how it would be needed to be toned down,
until I read the last line.
Multiple GM's (this is basically the cabinet rule, right?) is a great idea, especially considering how much more complex this game will be now.
Though I still have one gripe, and that's making the American civilization penalized for being, well, in America. I still want to make it so every country it on equal footing unless the player chooses not to be (for challenge, I guess). That way, countries would be evenly spaced around the globe (and will allow for some more, shall I say, "creative" countries to be created

), rather than just crushed into Europe.
EDIT: Re-reading the rules you made, it seem as though you said that people can create NPC's upon leaving, I still think there shouldn't be any NPC's (unless the person is planning on coming back, as you stated later) at all. So I think the player should have the choice of either dividing up his territories (which would be reviewed and discussed by the GM's) or just dissolving his country.