Children's content

I would love for kids to be kids, too, and I agree that we need the games kids used to play in other iterations of the Sims back. Mary Mack, like you mentioned, cops and robbers, Marco Polo in the pool, etc. I also am advocating for the return of the Sims 2 Open For Business Toy making bench so our SIms can make toys for the little ones and open a toy shop. The Sims 3 toymaking machine was "meh" because it didn't show our Sims actually crafting the toys, and I thought it felt hollow. Or if nothing else, create a new category on the woodworking bench called "toys" and add some things there. Let our handy Sims have more to create. Kids need more love, and the recent EP was nice but it didn't even scratch the surface of what kids content could or should include.
Here's another thought - costumes! Kids dress up in costumes for play dates or just to play around the house in with siblings, parents or by themselves. They were given shockingly few outfits in the Spooky Stuff pack (and why oh why can't a child initiate a Spooky Day party?!?) and subsequent releases did little to rectify that omission. Superhero costumes, monster costumes, career costumes like doctor's and scientists lab coats, firefighter and police costumes, Indiana Jones/Jurassic Park style adventurer outfits would all be cute. And Toddlers and Infants need Spooky Day costumes!!!