Definitely depth for me. I find myself playing the same game over and over because there isn’t enough depth in some packs to completely immerse yourself in a storyline - like in sims 3 you could live in a medieval town or on a pirate island or in a city filled with movie stars and rock stars. One of the (many) frustrating things I find with Sims 4 is that the “worlds” blend together too much and no matter where you go you see the same people in the same clothing (or worse, randomly generated attire that an infant could tell you is wrong). Even in the jungle you run into one of the Calientes!