I thought the Sims looked much better in CAS than in the Sims 2 when I first played it, and I was excited. There was so much detail, especially on the body and the face. But then I loaded the game and...
They looked like mutant iguanas that had crawled out of the pits of fucking hell. I noticed my morbidly obese sim looked fine, but my skinny guy looked awful. It was even worse because he didn't have a fat face. And the sims profile pictures look like lifeless mannequins. While I do like the Sims 3 over the Sims 2 overall (integrated neighborhood, CAST, fast loading times), the Sims look terrible aesthetically. Their smiles make them look retarded, and their facial expressions are over exaggerated. I could make good looking sims in the Sims 2 easy, even without CC, and when they smiled, it actually looked natural, not creepy like in this game.
I'm quite disappointed with that. The Sims look terrible. The males got the real shaft in this game. No good clothes or hair and it's impossible to make a good looking male sim. They all look way too feminine. Luckily, the MTS3 facial slider mod has helped quite a bit with this, but the sims still look god awful in-game.