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.
With these kind of features, they might actually help or lessen the addiction of a gambler.
This is like suggesting to casinos to cut their profit, and for the players to limit their enjoyment it's not democratic to suggest these things, casinos are not educational portals that will teach you how to gamble properly they can suggest but they cannot implement measures that will control your urge to gamble, and teach you how to gamble responsibly, you are on your own when you decide to play in casinos.
I doubt this will be implemented, there's no business sense in implementing these features.