Charging cables and hydrogen pumps suggestion

I think an "outlet" block should be added. It would contain a drum of a power cord a player could pull out and connect to a vehicle, that may be too compact to fit a connector or too awkward to dock, and all it needs is a quick charge. The length of the cable and the direction power can flow could be configured in the menu. The charging cable would be easy to break. The power cable could also be enabled to carry signals, just like docking does.

The same general idea minus signal carrying would apply to the hydrogen pump, allowing to fill up the tank like on a gas station.

It would be the most useful to allow early game vehicles to be charged without a needlessly expensive docking port, and for recovering vehicles that lost power using a "tanker" vehicle.

With that it would be nice to use the same mechanics to add winches(that have to be manually installed on both ends) and harpoon guns. Maybe even a personal grappling hook/tether to allow for spacewalks without a jetpack and for pulling light vehicles to help flip them.

All of this would allow for many creative builds and interesting scenarios, and would make the gameplay more immersive.