Why cant you have something like some servers have gamemodes where a lobby of people or maybe a private lobby with you and your friends have to complete a task like build a plane that is 80 tons and get it to take off. There could be an amount of time like 20 mins to complete it then each pilot would have a chance to take off their air craft while everyone else watches them do so. It doesn't have to be just that challenge you could set up a system where you can make your own challenges if you want? Just an idea.