Almost no shot that we do another signature campaign, but thanks for your interest.
It is better if you can provide regular promotions or add VIP program to make people attracted to play in mintdice regularly.
That's something that's also had a fairly serious amount of development is our VIP program. It was reworked a lot but hasn't been launched yet. That's coming. Anyone that has ever had any play on the website will gain rewards retroactively which includes many things including cash (crypto) rewards.
Promotional activity would probably come around at the start of 2023 if things can continue to go to plan. Ever since our 2.0 platform launched, development has been much more steady and stable than before.
In all fairness, they did hold a promotion when they launched giving away 5K sats no deposit required to bring in new users.
I did not see your previous Signature campaign to know if you had a reputable campaign manager or if you did this on your own.

Iirc it ran a few weeks and was managed by Yahoo. Hard to say but I imagine promotional events offer a better return, as well as possible retention when comparing it to Sig campaign costs.