There is nothing stopping players having custom menus when they start the game. The only limitation is that servers can't force their modifications to the players. If there is a way to support such modifications in a way that players have a choice, we can implement it. But for now, there is no such way and I don't know how to do it either. While you see the buttons for your server as such a great thing that you feel comfortable breaking client games, I can assure you that a lot of players will not appreciate your actions against them. So, if your regulars appreciate the menus, they can install those menus manually and be safe from having the menus altered by any other server they would visit.