Some people will complain about anything. If you don't like somebodies shouts then blist that person, it's as simple as that. There is no rule that players can't come up with their own gambling mini games and this one has been around since the early days of MMORPGs. Let people do what they want and you do what you want. There's no need to remove a feature from the game because a small group of people can't figure out what their blist is for.