Swein Forkbeard
Nintendo Fan
While I don't think this idea might make it in, it would definetely be a good idea. Because console games never get expansion packs, other civilizations such as Carthage and the Netherlands should be hidden at start and as you play, you may earn them. To recap, here's the list of civs in Civilization Revolution with their leaders.
Africa/Shaka Zulu
America/Abraham Lincoln
Arabia/Saladin
Aztec/Montezuma II
China/Mao Tse-Tung
Egypt/Cleopatra VII
England/Elizabeth I
France/Napoleon I
Germany/Otto von Bismarck
Greece/Alexander III
India/Mohandas Karamchand Gandhi
Japan/Tokugawa Ieyasu
Mongolia/Genghis Khan Temujin
Rome/Gaius Julius Caesar
Russia/Catherine II
Spain/Isabella I of Castille
Ummm... Where's Persia?
Africa/Shaka Zulu
America/Abraham Lincoln
Arabia/Saladin
Aztec/Montezuma II
China/Mao Tse-Tung
Egypt/Cleopatra VII
England/Elizabeth I
France/Napoleon I
Germany/Otto von Bismarck
Greece/Alexander III
India/Mohandas Karamchand Gandhi
Japan/Tokugawa Ieyasu
Mongolia/Genghis Khan Temujin
Rome/Gaius Julius Caesar
Russia/Catherine II
Spain/Isabella I of Castille
Ummm... Where's Persia?