Well yeah isn't the obvious end goal to create a robot version of ourselves? That's why their called hosts. A host machine for human consciousness.
From m-w
a : a living animal or plant on or in which a parasite lives
b : the larger, stronger, or dominant member of a commensal or symbiotic pair
c : an individual into which a tissue, part, or embryo is transplanted from another
The hosts developing their own sentient consciousness is going to put a damper on all that. Essentially then you have the danger of another consciousness fighting with your own within the circuitry. Or would your programmed consciousness really be you or an entirely different being with the traits and memories of your former self, but would evolve into a completely different being. People can change though too.
I've long thought about this exact possibility, and whether or not the result would really be you. It kind of becomes a spiritual discussion too, if there is a soul, and if it could be transferred mechanically. And even if you don't believe is souls could a robot body and programming actually be you or is it just an imitation. Theoretically say if they could reproduce your brain synthetically or through cloning, would that still even be you? So yeah existentialism and all that and if an individual can in fact exist beyond an individual plane.