The drogue installation would be permanent. The concept has a large fuel capacity...
So your concept is going to carry about 1500kg of AAR equipment (pods, pylons, pipework, extra high flow rate pumps, valves, vent lines) on a
permanent basis? Plus there's the drag penalty of the pods and pylons....
What do you consider to be a 'large' fuel capacity? Your sketch shows a few fuselage tanks - what about the wing tanks?