Signature campaign is good for gaining trust but adding more promotions and rewarding customers is a must since it's what attracts gamblers the most and incentivize them to join new casinos.
Not really we have one casino here with 2 signature campaigns but the community did not trust them,
You are right but the said casino (wan't mention their name here) had a bad reputation even before they start their sig campaign. It's a bit different with new casinos. Other than gaining exposure, running a high paying campaign for a long time will prove you are here to stay. A business which spends a lot of money on advertising is unlikely to scam (small amounts, ofc).
I would like to suggest maybe you could create something like in-built coin exchange? As we are all aware you accept different kinds of BEP-20 coins including BNB, SHIB, USDT and many others but I would like to know if maybe in the future you would have an in-built exchange of coins like other gambling sites do?
Not sure there are many casinos which have in-built exchange! Most of them refuse to add it because it can be abused in many different ways.