You can also add faucet for those who want to try your site. Since there are a lot of online casinos that offer crash game, it would be hard at first to get your players. So if you can give them few satoshis to play and be satisfied with their experience, they might be convinced in depositing more satoshis and play your crash game.
I agree with you! Having faucet or free satoshis every time the users log in will help them to boost their gambling platform. Many online casinos that are offering games with free sats. In fact, I also gained bitcoin from playing them and keeping the daily log in. By that, users can be satisfied to play using their platform and they will become more confident on using rocketpot.
If you are a good gambler then you do not care about the existence of the faucet. It doesn't matter if it's there or not if you don't use your money to play and only rely on the faucet then you are a lazy gambler. Moreover, Rocketpot offers a pretty cool interface and profitable jackpot wheels which I think are better than Bustabit. Even though Rocketpot doesn't have good traffic but it's only a matter of time and it's still new, I'm sure many people will be playing there cause they have created a signature campaign.