Please add a SE Asian culture or a few, no one ever adds nations from that region, and it gets so annoying, since they have lots of decent empires. ie. Indonesia/Mahajaphit/Mataram/Sri Vijaya, Thailand/Siam, Khmer Empire. South Asia is finally gaining more and more recognition in games, and its time for her decendant cultures to gain a little fame too. Okay Thailand isn't from Indian culture, but the other two are.
Also African, European civs should be organized by region ie,
East Africa: Ethiopia, Numbia,Swahili
North: Carthage, Egypt
South: Kongo, Grand Zimbabawe (Zulu), Xhosa
West: Songhai, Mali, Ghana, Ashanti, Dahomey
Basically the civs leading in their region should be in the game. Africa could use that system the most. Asia bassically had it until they added the Hittites, and Byzantium.
But for Eastern Europe, you got to give the first seat to Russia obviously. Then to Poland (in 1600's they had a hige empire), Austria-Hungary, and then your pick. Byzantium if you believe them as European over Turkey based. I would agree that Serbia would be next important.