One thing that would drive me insane, would for the AI to capture the cites around the capital and then, you will need to transfer the parts to another city, this city could be the other side of the map. Would you really want to relocate all you spaceship part to the other end of the map. If they are enroute to your former capital. I would just rage quit.
By extending to a few more turns after the launch would be pointless.
By extending to a few more turns after the launch would be pointless.