I think make a unique gambling game or casino that different in any gambling casino here.. so that you can get more people to gamble in your site if you make a newly game that you can gambel and entertainment for a long time ..
Gambling site is too risky to build. You do have to be legit in any ways which gambling is not a good thing. But we do all know that bitcoin casinos are really making profit in this industry but i really do found it as unethical one.