This all seems like a great idea...idea but I have to ask are there any coders, artists etc working on this idea at the moment?

But that said I do have some ideas, based on current predictions for some new teams, rather than simply have the United States as a team, makes it to much like the current day, you need to show how the borders of countries change over the years so here are my ideas:

Democratic Republic of California: Sometime in the near future much of the American western seaboard ranging from California in the south to Washington state in the north becomes independant of the Union after an invasion by the Chinese to "protect" the many millions of Chinese immigrants now living in these areas, folowing many years of "planting" millions of unwanted Chinese from their overcrowded nation to the US illigaly. This Communist nation has a good technology rating and good population and has very good relations with China but poor relations with the United States of North America (explained later)

Hispania: Following many years of immigration to the Southern US states the Hispanic population soon comes to outnumber "white" Americans by some 10 to 1. As such with support from Cuba and Mexico the area that was once Texas, Arizona, New Mexico across to Florida in the east forms a new nations, Hispania. This country has moderate technology, a large popualtion and relitivly unstable government (prone to civil uprisings) due to poor ecconomic managment and has very poor relations with the United States of North America.

United States of North America: Following huge oil and power shortages in their own nation around 2025, the United States invaded and Canada, forming a new Super-Nation, the United States of North America. This nation has a very good technology rating, powerful units, large population and a good ecconomy.

Republic of Quebec: In 2014, following a reffurendum Quebec finally achieves independance from Canada. Responding to unrest following the US invasion in 2025 Quebec likewise invaded and annexed Canada's seaboard provinces that were cut off from mainland Canada when Quebec proposed its independance. This nation has a good technology rating, moderate ecconomy and small population.

Well there are some of my ideas to spice up North America rather than just have the boring old US of A..... hope you like them and good luck getting some development underway!