Well, we know it [i]can[/i] be done as GTA V has shown - at least from an Xbox to a PS. Really, all we are talking about is a save game file that will need to be correctly compiled for the appropriate operating system architecture. It really falls to Sony and Activision whether or not they want to allocate personnel to implementing this type of exchange. At this point, I would say they are not focusing on such an issue. It will definitely be something they may consider in the coming years leading to Destiny Book 2. I am sure Sony would love to say, play Destiny 2 on PS4 with your imported character from Destiny... just as much as Microsoft would enjoy being able to state the corollary argument.