@83bienchen
Most of the activities you listed aren't unique to kids, or have very limited gameplay & animations.
Take Play in Pond, do you consider watching a sim wave their arms and stomp in a pond for 3 seconds to be riveting gameplay?
I'd like activities that are unique for kids, not just activities any other sim can do. Something that would make that life stage more interesting to play.
Activities like:
1. playing tag
2. hopscotch
3. board games
4. trampolines
5. RIDE BIKES
6. playing with jump ropes
7. having slumber parties
8. unique kids' social events
9. playing soccer
10. marbles
11. Ball Pits (for kids, not just toddlers)
12. hula hoop
13. hide-and-seek
14. pillow fights
.....And many more, many of which were in the Sims 2 and 3 and are not in the Sims 4.