Look at it this way: The value of KCS is entirely dependent on the KuCoin exchange being solvent. If the exchange goes the way of Mt Gox, KCS will be worthless anyway.
Having said that, if you want an exchange that pays dividends for holding their token AND lets you store it in a private wallet, check out COSS.
cool thanks for the info, I vaguely remember coss I will check it out again, I think now and the next few months will be a good time to buy anyway