I am really hoping that cross platform transfers are going to be possible. I have an XBOX 360 but most of my friends have upgraded to a PS4 and will be playing destiny there. Circumstances prevent an upgrade for the time being, but someday I really hope to join them. Transferring my progress from XBOX 360 to the PS4 is really the only way this would be possible because starting over would put be back at square 1. I don't even mind having to purchase the game again for a different platform, its more about the hours spent grinding, looting and developing. To start over would be heart breaking.