How much appeal do alt history roleplays have on this site?  

I have an idea for a alt history RP that involves a successfully industrialized china that has a global hegemony of tributaries (no, china doesn't conquer the world, simply has global cultural influence of varied degrees) (and a somewhat detailed idea of how this even came about in my head- basically neo-confucianism doesn't successfully nip industrialization in the bud and the southern song successfully rebuff the mongols a la greece vs persia (the mongols than get chased out of the north, where than Ganghis or one of his sons decide to invade the weaker, but still wealthy nations in the west)... This given 500 or so years leads to a world where the middle kingdom is the domineering force of the world, unchallenged from heights of Tibet to the distant Americas (or whatever china would call the place)).

Thing is, i'm unsure if many people would play it here since I go around advanced and don't see that many alt histories around here.  Am I just looking in the wrong place or is alt history just not a big thing here?