This is a gray area where I'm not certain. Some things are exclusive to the expansion packs, such as clothing, furniture, hairstyles, but some things become part of the base game. I thought traits might be something that gets upgraded with the patches as the expansions come out. It's entirely possible that a player with a fully updated base game would have all traits and Lifetime Wishes available. If we can get someone who only has the base game to verify this, that would be great.