What you say can be a way for new casino to attract more attention from gamblers who already register on their site. They will see how generous the site gives that to them so they will like to stay for a long time. With developing the other things that can support casino to grow, I am sure that will makes the casino bigger although that still need time. Not many casino can survive among the hard competition with other casinos because they can not gives something that can make their members impress.
This will good for all, both casino and members while each of them can benefit with that. Many other ways that casino can do to satisfy their members and that can not be done in rush. They must observe what is the most thing that their members like so they can make a promotion to invite more gamblers to comes.
So I write about competitions and promotions that should be held on the forum to attract more attention. You can't do without investments if you need new players who will themselves become an advertisement, communicating in topics about crypto casinos.
As I managed to find out, this method is quite effective. It's a pity that many casino admins ignore it. Create a new competition with valuable prizes every week. That will be a stir.