That's good news. It's very likely KCS to be listed on Binance in return. If so, it'd be a big win for Kucoin. In fact, both Binance and Kucoin are Chinese exchanges. People come from the same country have tendency to support each other.
I doubt that they will mutually add their exchange tokens , kucoin wants to earn on the Commission , binance is unlikely to give a slack and add a token as BNB has a very good movement in the market!