The comment about coming back with Coruscant changed is interesting as well. The only two things I can think of that make Coruscant different are the space battle, and whenever Palpatine becomes emperor. Obviously, the Tantive IV isn't coming back from the space battle, so I assume that they're coming back after the Empire is created. But why would Yoda and Obi-Wan come back? I'll assume they weren't living under a rock while the Empire was declared, so they have to be coming back to either go up against Palpatine, or pick up someone else. Padme? Anakin? Mace?