There are two of you now. And two of the other. There are tons of brain-like networks of cells in the body, no? In and around the heart and such and I'm certain we'll find more in the next few decades. The fun part begins in how capable either of you and the other will be in establishing a functional union.

What's gonna happen when "your brain" recognizes your old body in with another head? Will "it" get horny? Jealous? Angry? Happy?

Phantom pain and stuff like that comes to mind and the question of how many dimensions (not levels on scale) of consciousness there are in this physical world/reality ...