I don't disagree with this assessment, and it's one of many reasons I dislike Boudicca. However, Civ has a long history of turning collections of culturally unified city-states into civs (Greeks, Maya, etc.) or even unaffiliated bands into civs (Scythia) or even utterly disparate cultures into civs (Civ5 Celts). Damascus, Aleppo, Palmyra, and other Aramaic-speaking city-states in the highlands between Mesopotamia and Canaan were often politically independent (or independent-but-tributary) and often held considerable political sway over Canaan and sometimes even extending into Anatolia. I would be miffed if we got Zenobia over Babylon or Assyria, of course, but as an "also" I think it's a compelling solution: the Aramaean petty kingdoms lack compelling leaders, and Zenobia lacks a civ--making Zenobia lead a civ called "Aram" or even "Syria" solves both problems IMO. I'm not sure that's true. She's been a popular subject for artists and historical novelists for ages.