Well I think you should add dice game of course the most favorite game of all of us and think something unique game for the gamblers be attracted and focus int the visual of the site too because for me that is important, And the most important is it must be fair site.
And what if his bones will be different from others? I think it would be difficult to take a seat in this niche. To compete with the existing casino will be difficult. Easier to come up with something that others do not.
You have a point, but, this is worth a try if OP have this interesting game that could pokes everyone attention. It would be hard to attract players at the first time, but, if someone played in OP's gambling site, and spread the good word about it, then this is the start of his gambling site to shine and to start making a name in the crypto world. The risk is big, but if this is going to be successful, then OP would be a rich man in an instant.