We purchased a My Cloud Mirror to provide backup storage for our lab research. Unfortunately we never could get it working. I believe this is because our university uses the WPA2-Enterprise protocol for all WiFi around campus. This security protocol is not currently supported by WD products AFAIK.
It would be great if the My Cloud (and other WD devices) could provide support for WPA2-Enterprise. This would enable use of such devices in many areas (universities, hospitals, businesses, etc) which prefer to use this security protocol, thus greatly increasing your market size.