Just discovered this thread, thought it would be appropriate to say here.
I've been making a prototype of the same idea (choosing who to influence, Cold War), but with different mechanics, and in general, greatly expanding the scope of the game. (I can DM the ideas I have if you are concerned that I'm just making a knock off.) I am also thinking of open-sourcing the game, assuming I decide to set no price to the game.
Like Bedroom Coders, I just want to know if you are fine with these things.