Do you guys think next update will be playgrounds?
Honestly for a new feature I think make a type of facility called the classroom.
Neither of these would actually work, as child-modeled guests can't separate from adult-modeled guests. They aren't individuals. From the way guests seem to work, it's an all or nothing situation. If you want children separated from adults, they will have to spawn alone without adult guardians, and then we end up with a bunch of unattended children running around. Either way, adults will have to also use playground equipment and classrooms.
Of course, it's possible Frontier could pull a hat-trick of some kind, but I don't see it happening.
There's one other highly-requested feature that often gets forgotten about, though; the international food shops from
Coaster. And even though the free update doesn't always tie into the DLC, this feature, along with hotels, would tie together nicely with a world tour to finish off the game.