Sling a "Mothership" out there, undock the lander from mothership, land it, eject a couple flying drones to pick up the samples and pack them in the "mars-to-mo

Sling a "Mothership" out there, undock the lander from mothership, land it, eject a couple flying drones to pick up the samples and pack them in the "mars-to-mothership-craft". Launch "mars-to-mothership-craft", dock with Mothership, return to Earth. <sarcasm>How hard could it be?</sarcasm>