You go all that trouble to create a single connector, then have two cables out going in different directions to different sources? One data, one power?
The data brick as pictured would have to have some sort of power source of its own, so why not a single cable from brick to connector?
What are you going to do with the integrated data cable when you unplug and leave the desk? You still need the power cable attached to the transformer.
This could be simplified at a...