Smart outlets can be useful as part of smart-home scenes: When the last person in your family has left the house, some lights, appliances, or other devices turn off automatically, and the reverse happens when you return. When you go on vacation, a schedule has smart outlets simulate the pattern of an occupied home to deter burglars.
When you want more than one smart outlet in a certain place in your house, however, many designs, and it succeeds—at least from an interface and feature perspective.