It should be more than one cryptocurrency that are accepted in the casino and not just one though the cryptocurrency that will be accepted as one of the payment method should be legit (what I mean is not adding random crypto but the ones that are being used many times like BTC, ETH, LTC, Doge and many more. The other important that a casino should be is the security measures that will make the gambler's fund safe. Design is also what many gamblers want and promotions. Are you sure that KYC won't be required at all?