You guys should try playing them its pretty challenging due to lack of tech and infantry, but Golden Horde archers are best cav archesr in the game. By the way if you are curious about The Mongols go buy Genghis Khan: Conqueror of the World by Leo De Hartog. It covers Mongol history up to the death of Guyuk which is about 85% of Mongol Empire history. Its the best book on The Mongols I have ever read and I've read many. I haven't found a good book on Mongol history post-Guyuk yet though.