Personally, I'd love multiplayer. I think it would be awesome each planet had about 3 people on, all at different KSC dotted around the planet. If docking was implemented, this would could allow a economey to get implemented, such as Player 1 who owns the docking station has alot of fuel on it. Player 2 is running low on fuel and needs buys some. Player 1 then has to pay player 3 to bring some more fuel up to the docking station. There could also be a upgrade shop at each of the KSC where people us money to buy upgrades. The only problem is, how do they get money. Missions maybe? Or mining?