We're dropping our new dice game very soon!

Nice to hear that, hope to see a great improvement and more attractive features on the new dice game. Anyway as you are running signature campaign at the moment, regular promotion would be the best thing to support the signature campaign. Your past 2 roll hunt promotion are actually nice but I dont understand why not many people participated. Probably you can do something different, make it like a contest with different prize distribution. Lets say roll hunt for a specific number, players who roll it the most during the competition wins. This will make players keep on betting to hunt the number, unlike the previous roll hunt contest where players stop betting once they got the requirement.