I've never heard of this site before. I think the importance of signature campaigns can be understood from here. You have a very nice 4-letter domain, but you haven't done much about promotion.
You can define weekly free bets and spins to attract more users to the site. You can give this right to high-level ranks in the forum to prevent multi accounts. In the Games & Rounds section, you can open various prediction competition threads. Such campaigns usually attract the user to the site.
Bonus system is the next state because when the site gets high amount of traffic and organic users they can give bonus facility to keep the users for long time. But when a new site enters the gambling marketing, its first task is to market its site very well. and attract users. Signature campaigns help a lot in marketing a site in this regard. And that's why reputable casinos spend thousands of dollars to run long-time signature campaign here. So if new sites run long time signature campaign here with a big budget they might get a positive result.