Sense we have captured the Garlean Empire tech. With the research lab that gave Zenos and Skulls leader the gift of the echo. Many of the scions have said they wish they could help us but lack the echo to protect them. Alisaie or Lyse even stated they wanted to borrow our echo. With Alisaie almost getting everyone branded by a primal. This tech would be very tempting for the scions to use.

Even more so would be a way to heal Y'shtola eyes and Thancred aether. I would not even put it past Urianger tring to use this tech to bring Moenbryda back from the dead. If stormblood is supposed to be a dark expansion. What better way is there to be dark then the corrupting of our heroes.