I'm more surprised that the Franks are expansionist than that the Aztecs are militarist. I think one of the earliest articles mentioned building cathedrals as the French, and the Capetian Knight unit from the tech tree in one of the dev videos really suggested a Capetian dynasty France, which made me think they would be aesthete. Definitely an interesting design choice not to have any medieval aesthetes.
As far as the ball court, I think it would be cool if they had it as a generic building available to all players, given that it can be used by three different cultures. Maybe it could give stability and military xp or something, and come with an in-game event for the Aztecs and Mayans. It's odd to me in Civ that the amphitheater is one of the generic buildings when its more of a Mediterranean specific building, although I understand the need for a culture generating building in the classical era, and they can't really have all of the generic buildings tailored to be region specific. I think that Humankind is having a slightly different approach to buildings than civ based on what they've shown in videos (like the tannery, pottery workshop, alchemist's workshop and apothecary) which seems to offer a bit more universal, more numerous, and cheaper buildings. But if they do have some region specific buildings passed off as a generic baseline, I hope its not just European-specific buildings.
As far as the ball court, I think it would be cool if they had it as a generic building available to all players, given that it can be used by three different cultures. Maybe it could give stability and military xp or something, and come with an in-game event for the Aztecs and Mayans. It's odd to me in Civ that the amphitheater is one of the generic buildings when its more of a Mediterranean specific building, although I understand the need for a culture generating building in the classical era, and they can't really have all of the generic buildings tailored to be region specific. I think that Humankind is having a slightly different approach to buildings than civ based on what they've shown in videos (like the tannery, pottery workshop, alchemist's workshop and apothecary) which seems to offer a bit more universal, more numerous, and cheaper buildings. But if they do have some region specific buildings passed off as a generic baseline, I hope its not just European-specific buildings.