Thought of another scenario based on the Terran Alliance.
Scenario H: (Earth's Pleasant Little Civil War) The Terran Alliance has finally evolved into a Star Federation. Still the Nation-States of Earth are angry about the power they lost over the other colonies. They successfully force the Terran Government off Earth, but it appears that war is on the Horizion. The other Alien Civilizations (except Drath, Korx, and the Korath since they are gone in Dark Avatar) take immediate interest in the situation. They can't invade any of the Humans' planets because of the economical consequences. But that doesn't mean that they wouldn't love to establish a puppet regime. Soon the Other Races help establish 9 new Mega-Nations to start World War III or IV. The following nations will not settle for anything less then complete Military Victory.
Holy Islamic Republic (Krynn)
African Tribal Alliance (Thalan)
Civilized Scientific Antartic Refuge (Iconian)
Oceanic Union (Torian)
Neo East Asian Empire (Yor)
Revived Soviet Empire (Dregin)
Confederate States of Europe (Arcean)
Greater United States of America (Altarian)
Amazonian Commonwealth (League of Independent Planets)
The player is free to play any of the Mega-Nations, but be warned. If you rely on your alien friend to much, you could end up being the ruler of a puppet regime instead of a new Galatic Order.
Thanks for Reading. If you got any ideas for other scenarios, please post!