Nowadays creating casinos is turning to be a huge industry and competition, the main important thing now is how that team is managing the casino, fast and various payment methods, a good support for the players. Marketing now requires only a big capital and I believe it should be the biggest part of that investment.
You called it a crypto casino, so you must hire blockchain developers and not any regular ones that would face a lot of abstractions and security vulnerabilities.
It’s all about the good money and a good tram to hire, advisors, marketers…. You can see the examples of successful casinos here running signature campaigns.
Launching a casino may be easier but the sustenance of its operations is the usual bottleneck in lengthening the operations of the casino. This is why if your group do really want to launch a crypto casino, better approach developers that you know of, near your area as developing a site is not a one-time deal. As long as you operate the site, you will still need their services, fixing bugs, improving the site, additional features and so on.
Aside from that, you need to look at the bankroll part. Do you really have enough bankroll to sustain the site? If there are big winnings, can you pay those players? Do take note, launching may be the easier part, but when it comes to sustaining the operations, that's the challenging part.