as it is a wired connection, it will not drain the camera battery as fast as WiFi remote control
reduces camera shake by avoiding need to touch the camera
it can be used in the field for macrophotography:
some set up a small laptop or slate like a Surface Pro on one end of a horizontal tripod attachment while the camera is mounted on the other end
improved visualisation of focus accuracy and depth
ability to more accurately select focus points for focus stacking
however, note that the current version does not allow exposure bracketing remote control