The civs I would like to see are Phoenicia, Sumeria, Maya, Byzantines, Celt, Austro-Hungarian, Netherlands, Portugal, Sioux, Korean, and Ethiopia.
Honestly I don't understand what is so great about the Zulu, Sure they must be fun to play as for war, but just look at their history. They were small and insignificant before Shaka, Shaka comes along leads them to military greatness but sets they up for downfall, and after he dies they fall back to an insignificant group. For Africa there should be civs that have a whole sphere of influence, like Great Zimbabwe and the Ethiopians. Well it is what I think anyway.