So basically your business model is "give us your coins, we will keep them safe for you(until we run away with them)".
I get your point of trying to protect gamblers from wasting their gambling money, but nobody is going to trust you enough to send his coins to your service.
By the way, I like the domain name pig.gy, but having a cheap domain name with a .gy extension also can be seen as a red flag and a signal, that you don't want to build a legit and trustworthy business.
Why do you think that the crypto casinos "are going to hate this"? The casinos won't even notice the existence of your crypto service.