I would really like Sims to have dislikes and diet preferences, as appose to just using those as traits. Dislikes I see working the same way favorites do. Like my Sims favorite music is hip-hop, and her least favorite is soul/country western. As far as diet goes, it would be a personal preference of what type of food the Sim likes to eat the most: Meat, vegetarian, fish, organic etc.
In summery, instead of the following being traits, they should be their own separate tabs under a Sims hobbies and interests:
-Technophobe
-Vegetarian
-Can't Stand Art
-Dislikes Children
-Computer Wiz
-Vehicle Enthusiast (can never spell that one right)
-Loves/Hates the Outdoors
-Hydrophobic
-Never Nude
I think a Sim should have 6 traits, one being hidden.