Scorpius' solution for replacing his Scorpion Stinger's fuel loss by siphoning off Terra Venture's energy is equivalent to re-enabling a non-hybrid car with an empty tank for travel by super-charging its battery.
With the Quasar Sabers and Lights of Orion lost to him, why does Scorpius still hang about Terra Venture? With the rest of the universe to conquer or maintain, what is to be gained?