Which pack has been most influential in your game?

Seasons has influenced my game play the most. A trip to the park may be canceled due to rain. Gardening was expanded on and that enhanced my spell castor experience as they grew their own herbs to make potions, and it enhanced my pets experience because I can grow catnip. When I keep a garden my sims usually have to stock up enough food to carry through winter as I don't let them farm in the winter. The seasons encouraged me to build a green house for gardening in the winter during emergencies. Honey was a nice edition to add to things to sell as well.