I did find an annoying flaw in the game. In the Sims 2 pretty much any hair would work on any age Sim from Toddler to Elderly. For some reason in the Sims 3 hairs are divided between Toddler/Child and Teen-Elderly. I spent hours then importing child hairs into the game only to find for whatever reason it won't include them! It was really annoying because I wanted to make Emma's daughter and I had like a dozen crappy choices. Grrrrr.
The good thing is next year the Sims 4 comes out. Just think of all the fun I can have with that!