PCGamer has released an article called "Sid Meier was apparently baffled by the decision to launch Civilization 5 without Genghis Khan: 'Sid said, What?' ".
The article comes as an reaction to the recent Civ7 reveal, and PCGamer talked with Firaxis about the new Civ7 leaders and civs.
And it seems that Sid is a fan of Genghis, and was apparently upset that he wasn't in the base game.
The article itself doesn't really provide much other information, but I like this little detail
