So now we can create objects independent from our physical bodies...
This makes me think of Jake's powers and how it was hinted that he's still buried inside us somewhere. Maybe in future we could use this power to create an autonomous mind-controlling parasite which can burrow into a monster's mind. A brain worm? Cordyceps fungus? The possibilities are astounding.
Even if you didn't kill Jake, this could also be a reason to bring him back, since both Ella and Ella Doll demonstrate that related Superhumans can teach each other abilities.