I know this is likely down the line, probably after full release, but something I would like to see would be trailers. Cranes of sort. So that I may have a tractor unit rover that can attach itself to many different trailers forming a train so that I may have a cargo trailer for transporting cargo. Maybe a mining rig, crane and some way to connect/ disconnect trailers in a smoother more compact system than docking ports and motors. Maybe being a single part and articulating document like an omnidirectional hinge? Or maybe a rotating hitch to simulate a fifth wheel hitch for semi trucks. Who doesn't want to see a semi truck moving across duna's surface.