Well, after Lawless Hammurabi I count that I have 15 leaders remaining!
The Amazon Queen: Where Boudica has to vassal one of the two males, kill the other and win a domination/conquest victory against 4 other witches. All rules are open in love and war! The female counter to chivalrous Washington.
Kublai Khan: The Heir Apparent, a replay of the Great Khan's rules. Set to be the last of the RPCs, at least for me.
Abe loves New York: The final OCC game where Lincoln changes Washington to New York and must win a Space Race.
Hatsepsut: A true Cultural Challenge, where she must get 6 cities to 150,000 culture. I will turn off the culture victory and will shoot for the Space Race win once all cities hit 150,000.
Mehmed the Meh. Nothing spectacular except we must win a time race win, at all costs! Easy? Think about it!
Nature Boy Gilgamesh: Must win without ever disrupting the natural beauty of the world! Thus no chopping (except to unlock natures beuatiful resources), no lumbermills, no national parks, no watermill, no workshops, no polluting buildings (forges/factories/airports/ironworks, etc...). Cottages/farms/mines/plantations are allowed, roads minimally to connect cities or resources.
Industrious Sitting Bull: The opposite of Gilgamesh, the true history of the Native Americans! All forrests and jungles MUST be chopped ASAP! NO buildings that reduce unhealthiness (no harbors/graneries/grocers etc...). Never can adopt environmentalism.
DeGaulle the Hero: Come follow the Nobel DeGaule as he spreads democracy to the world. The heroic French Revolution, and RPC to honor the French after my bastardization of them in the Napoelan and Louis RPCS!
Qin the Coward: He must build the Great Wall and can never settler a city past his culture borders. He cannot capture enemy cities (ha can raze).
Paranoid Zara: A divine Intervention game, looking for Mad Scientists Fan's to screw with his game, offering more and more challenges!
Fred and the Perfect Germans: A game of building the ultimate German empire, 8 cities all with specific specialization! We can never capture an inferior nations cities!
Justinian and the Crusades! Enough said
Hannibal the Land Lubber! Sure you may think he's master of the seas with his financial trait and that dynamite UB, but Mad's Hannibal hates and fears the water and can NEVER settle on a coast, build a navy, nor work an ocean or lake tile!
Supergenius Darius. Remember simple Brennus, well this is Smart Darius using the same rules! We build only farms/mine/improvement for a spectacular hammer/production economy! WE can run limited specialists but have certain limits: No representation (to avoid moving to a SE game) and no caste system. We had Cyrus the Persian CE master, here we have his opposite in the cottage-phobe DArius.
Fickel Isabella and the 7 Holy Grails: Isabella must control every Holy city by the end and adopt to the newest religion she get's! The game can be a war-mongering fest or a peaceful endeavour!
Feel free to make all the suggestions on these games, but I am pretty certain this is what I have planned!