Seems like a good idea, if you think it will be an outright competition between Binance Huobi and OKEx (I actually do not know OKex much at all). But what about all the other big exchanges also trying to do something really big? Bittrex and their IEO concept. And Bittrex new exchange Bitsdaq, which already will also give the same values to their tokens like BNB.

Then when you think about it, why not just get all three tokens plus more?