empty-robot option:
This removes the equipment and the cargo from your bot into the private storage. I don't know why it doesn't work for the active bot although it would make sense.
Say I wanted to farm on drones. It doesn't make sense to equip lasers as I would waste energy cells. Thus I tend to equip autocannons. Best way to do this is activate another bot, empty the other and equip it. I don't know if there is a similar example for others.

unload cargo option:
Say you have returned from a mining/farming session. What you have to do is: open the private storage, open the robot's cargo, select all items and move them into the private storage. It would be easier if you could just select "unload cargo" once the private storage is open.

Hmm .. sorry wrong section .. GMs please move this post into the features section
Thanks for moving the post