Also, Steve, with the changes done to orbital habitats, are they a viable option if the nations don't find an ideal or close to ideal world in Sol's vicinity ? Further more will it be worth it to build some to continue exploiting Sol's resources after Earth either falls or is evacuated ? (Plus, it'll be interesting if one of the nation chooses to go down that path, stay in Sol and lockdown the system as the others evacuate their forces to their new capital, stealing their remaining population and industry in the home system).