That's a great choice op that for now you should prefer the smaller players in your casino/ sites than choosing bog whales in your sites. And about the KYC some big players or gamblers choose always anonymous and did not give some private information about them and we can not force them to do that cause the privacy of the user is better to hide.
Yeah most especially now that the casino is just building up with new community members small players will give more feedback easily than the whales since the whale's players only come for the winning, most small players just play for fun that way they can easily point out any shortfall in the system that need to be fixed by the team.