Old post, but the Phillips is zigbee light link protocol, and can only act as a repeater for bulbs in its own mini network.
The linear in this topic is a zwave device, and capable, when powered on, of acting as a repeater for other zwave devices.
It can be quite useful to have a ceiling-mounted repeater in many installs. So it just depends on each household’s set up as to whether this bulb is more useful than the Phillips, but it could be.
As for adding it…you’d need a zwave smart device type for this device class. No idea if there’s already one available, though.