Won't happen: China is a major market for Civ.
Which is perfectly in keeping with Chinese historiography; one does not have to be Han to be Chinese, even by Chinese reckoning. As far as the Chinese are concerned, the Wei, Jin, Liao, Xia, Yuan, and Qing were Chinese, even if they weren't Han. For another perspective, the overwhelming majority of Roman emperors were not ethnically Roman; one was even an ethnic Carthaginian, traditional enemy of Rome. Modern peoples place a lot more emphasis on ethnicity than many of our forebears did.
Considering how many ethnicities and religions call India home and how many languages are spoken there, I don't think language is a compelling argument. However, I do think it's a shame that as the Civ franchise moves away from blobs, we're still stuck with an Indian blob civ. I think India ought to be divided into two or three civs; there's no reason one of them couldn't or shouldn't be the Mughals led by Shah Jahan or Akbar.
I've enjoyed having Teddy, but either Adams or Silent Cal would be someone new.