When you think about it, the troubled heroes and world of Warcraft is a perfect fit for a regicide simulator.
Given Crusader Kings 2 is already a top notch fantasy political simulator, with a good dollop of regicide and awkward family management in between. It was already a perfect backdrop for Game of Thrones, and someone found a loophole that let them restore the Roman Empire by 973 AD. As a horse.
The latest land for CK2 to conquer? Azeroth. A global mod based on Blizzard's beloved world, the creators are planning to make Warcraft's four major nations playable, with gnolls, pygmies, kobodls and murlocs also playable as wild tribes.
There's no ETA as of yet, but the announced plans are fairly ambitious. The final version will have guilds and orders that will unite characters of the same class; you'll be able to build multi-class characters (like Warrior/Mages), learn dark magic through mentors or various event chains, or turn a Dwarf into a Paladin. Whatever works.
A couple of development diaries are online over at the ModDB page.