>>4361653Philosophical? The "Original" Rei Ayanami is the One that is from NGE and EoE. I doubt Rei should ever be seen as "One". Maybe when She was finally returned Lilith, yes, but Her whole character in the Original show was that "She's replaceable". Her simply being from the Original show is what makes Her "Original".
My guess that "The Rei Ayanami" is the "Ghost" that Shinji saw at the very begining of NGE and at the very End of EoE. Only explanation from "Philosophical" standpoint of "The Rei". A "Begining" and an "End".