That player vs. player game is a good idea and if it's backgammon, I think it's something. But most of the games that I've seen making this kind of pvp games except poker, they don't get much attention.
This is true where most pvp game sites nowadays doesnt really get that much of attention which causes for them to fail. Lots have tried but do end up the same thing but lets see on how backgammon will pull some interest but op shouldnt hope that much.
In talks of licensure then it will vary on countries jurisdiction because we know that there are known or famous sites now doesnt even have a license but talking about reputation and security then having one would give positive impressions.