Half a billion dollars paid already in the casino, that pretty showed they have the budget for marketing, probably they are just evaluating things up and don't want to spend money without an expected return. Well, this forum( bitcointalk) is one of the best venue for crypto marketing and I'm sure they'll reach that $1 billion as they attract more players from here.
We'll know that in the coming update if they are satisfied with the results and need to establish their brands because they are a new concept they will proceed and pour more into marketing and of course, since Bitcointalk is the best place to market they will do a relaunch.
They also have to cover new territories like asking people to rate them on Trustpilot or hiring people to promote them on other forums.