Um, the scale of the thing looks a bit... too ambitious. I mean, no way they can model all stuff on that planet. If you can go everywhere, it is bound to happen to find empty places. The city alone is very unlikely to be filled with interesting stuff. A bluray is big, but if everything contains interesting stuff the storage never is enough. And I understood you should be able to visit different planets? I'm not sure how they combine this with this you can go everywhere thing. Let's see.