I would like to write honest review about mintdice.
The first thing that catches your eye - very nice site design. All games are completely understandable,  there is a small tutorial for beginners.
Faucet availability is also a big advantage. (100 satoshi is more than other casinos give to you)
Now I want to say what you can add on the site:
1. Night theme. At night is simply irreplaceable
2. Live support. Its nice to see support and contact them if you have questions.
3. Fix problems with animation, it freeze sometimes.
4. Fix problems with sound. Sometimes even if I turned it off in the game, it still works

In general, I like your project and wish him good luck.