I would love to see more activities unlocked for child Sims. The child stage is my least favorite because I feel like it's so limited--there are only 4 big goals they can accomplish, which is boring a...
Just a little thing I'd find really cute would be hair braiding. Hairstyle would change randomly to a selection of new hair braids and would revert back to normal hairstyle once showered. The hairstyles could have cute clips and flowers in.