A sell-off or joint venture of Mothae with GEMD might make sense. As the crow flies, the distance between the two mines is about 6km. The road distance is almost double that at about 12km.
It must be a consideration to have a mining/crusher/DMS operation at Mothae with the shipping of concentrate to Letseng for processing. All the resources already exist there including the power supply, although an increase of capacity might be required.