Teens. They need a stuff pack. With furniture that would make teens bedrooms....teen bedrooms. For instance, a mezzanine, a canopy bed, laptops, polaroids, decoration, desks, clutter. And clothes. And hairstyles . Also they look just like adults with rounder faces, I'd like it if they were a little shorter.
And I think they need more teen stuff to do, like after school activities, sneak out at night, have slumber parties, or even just being able to text on their bed.