alt Hacker NewsI commend your diligence, your theory may even be internally consistent, but I don't see why I should believe this rather than the comparatively simple and intuitively true (to me, anyway) notion that there is a genuine soul, it has its own volition, and it certainly interacts with the physical body and brain through a link that is currently (and may always be) mysterious.
What you say that the soul acts like a homunculus, "interacts with the physical body and brain through a link that is currently mysterious". It is a "center" thing that has volition, and semantics, and is genuine.
And it is understandable to do so. It certainly feels unified, and genuine. And it is simple and nice to be so. But intuition fails us hard when it comes to introspection. We feel alive, and conscious, but we are a few billion neurons connected by trillion branches, all wrapped in a bio-robot, put inside a complex environment full of living things in a state of cooperation and competition.