I bet the hidden traits will be a new Ctrl+Shift+C cheat in CAS mode, in a future patch update. You know what I would like to see or I bet will be a new CAS feature in an expansion pack/stuff pack (Sims 3 is still fairly new if you think about it) maybe in a Seasons Expansion, but tan lines and an orange-y skin tone (a fake bake tone), and a jacket for the winter. Plus, I could see having everyday and sleepwear having subcategories for every season (Swimwear won't for obvious reasons): Fall outfits, could mean a simple long sleeve top, and pants, with sneakers, Winter means warm boots, extra layers of clothes and maybe an outdoor winter jacket (what person in their right mind would wear short shorts flip flops and bare shoulder tops in the cold winter, or Sim rather?), maybe they could go in their undies in the spring/summer and save the flannels for the fall/winter.
Also, how about different types of swimwear?