A new station that connects all factories within a sector with cargo ships/long range transporter. This would work as an alternative to cargo shuttle and allow factories to share common ingredients. Also, this could be beneficial for game performance since a few cargo ships could replace a large fleet of cargo shuttle, even move the entire logistic network to the background if transporter is used. Then, the PC/server doesn't have to render all those traffic, giving player much better experience(higher frame rate/more space for multiplayer).
Maybe this function could be implemented into trading post, so that the trading post(an additional tab in player's trading post) could handle all import/export of local factories.