When Erwin is explaining the use of the serum and the outcome of using it to obtain the titan’s power from another shifter, something in particular he says grabbed my attention:
Erwin: The main goal of this mission is still to eliminate the intelligent Titans and to take back Wall Maria. With this in mind, if certain developments happen, I hope everyone will invest full effort into stealing the “Titan power.” If successful, we not only receive a Titan’s capabilities and much intel, but we can also revive someone who is close to death.
He and the others seem to be under the impression that when the titan’s powers are transferred, the new host also gains helpful information from the previous one. Which I can only assume would be via the memories of that shifter.
So now I’m confused. Again. That happens a lot when I think too much about this series.
I’ve been assuming for a while now that this was purely a coordinate perk. It was Rod Reiss who told Historia (and Eren) that whoever held the First King’s/Coordinate’s power inherited the memories of the world.