I've seen a theory relating to that idea, yeah.
The basic idea was that the "King" is Eto's creation, much like the characters in her stories. And Sasaki told us that he didn't care for Takatsuki's novels because the characters in her stories always die.
So the King is the revolutionary figure Eto intends to create, that will be sacrificed for her revolution. In other words, the Kaneki that she is molding.