Well we don't even need seperate sky boxes now that I think of it.
Aloshi's Idea: Hyper space portals, or the option to fly for a long time, that way we don't have to make the ships go 9k miles an hour. If we make the planets far away from each other, they won't even load so it would have minimal lag. We could have a server with over 100k bricks this way, with the lag of like 10k.