The Age games have tended to have 2 distinct styles of campaign: a series of campaigns following historical civilizations or leaders (like in age 1 and 2) or stories with new characters inspired by historical events and figures (like Mythology or Age 3). Personally I prefer the structure of Age 1 and 2 in their campaigns as I didn’t really care too much for the storytelling of the later games but that kind of puts us in an awkward position since the game seems to be in the same time period as Age 2 and we already have an abundance of those campaigns.
Are there other RTS campaigns you hope the game will be inspired by? What about the separate economic and combat campaigns of stronghold? Or the conquer the world modes of games like Rise of Nations or Warhammer 40k Dark Crusade?