I am not a developer or an investor, but I would want to ask you if it would be possible for developers to create a Virtual casino, seeing that Brick n Mortar casinos are closed or restricted during the Covid pandemic? I know this would be a much bigger project than what you would be doing with your Dice site, but just look at the potential for this in the future.
People are looking to simulate the experience that they have, when they visit Brick n Mortar casinos. The social side of it and they want to do this in a safe and clean environment. (Doing this at home, is the safest option)
See this on a gigantic scale in the form of SimCity or even Second Life where you have a Vegas strip, where many Crypto casinos can be visited on one site. (Stake.com / Wolfbet / Freebitco.in etc on the same street)
Your answer to the marketing and promotion of your casino lies in your signature.
You have seen several casinos hosting Signature campaigns on this forum and what better place do you need to promote a Crypto casino on.. other than the place where most of the Crypto enthusiasts gather? (These sites will not continue doing this, if it did not bring in new business and/or if this was not paid for by new business coming in)