For me simple and selective or unigue games is good because having lot of games will make the site looks not familiar eve after many uses.
Having instant deposit and withdrawal for crypto currencies will make them as good one.
Just like your signature mate, its simple yet one of the best gambling site as of today. I also want a gambling site to become more simple, unlike those gambling sites that a lot of numbers and so many marketing advertisements and its really confusing to look at the site if you are not familiar about it. Gambling sites can also create their mobile version application, its more convenient I believe.