It's unlikely they would start paying a dividend as that's associated with lower growth firms and not an impression Apple wants to give, but not impossible. There is obviously major pressure for it from their investors.
They make decent purchases all the time, the Israeli flash firm for $500m was one of their biggest. The Siri developers. But they probably won't make a multi-billion investment, again it's not really their ethos.
Hard to say what is missing without being on the inside, but they undoubtedly have plans for their portfolio of patents and suppliers. I wouldn't be surprised to see more backwards vertical integration to secure themselves for the future. They already pretty much control their entire supply chain though so.. to be honest, not much is going to dent $100bn in reserves, unless you want to bail out Greece..