I'd buy any pack that added an actual sport Sims could play together the way they have handled sports in this game so far is sad. I'd love more than take turn sports like basketball and bowling though bowling makes more sense to be that way though I wish those waiting and watching had some reactions and were less robotic.
In Sims 1 you could watch your Sims play a game of volleyball together in Sims 2 they would play soccer with 1 sim defending the net now we get kicking a ball around or Sims taking turns not very fun to watch.