2. They can also set a time limit of playing for a player, give notification if this would be their last game anymore for today.
3. Set a notification showing how long they've been playing.
The three features that you mentioned above can really help the public and also gambling players, but they are not easy to implement, for example in the first point, it will make the players not want to play, and will cause losses to the casino side. On the second point, are you sure you won't cause any harm? it could be because of the play limits given, gambling players will do all-in in the last round given by the casino, of course this will be very dangerous right?
But, for the third point, I totally agree that if it is implemented, this is done by several big platforms like TikTok, they will remind their users how long they have been scrolling videos, and give advice so don't forget to do other activities such as playing with family, etc.