Consciousness is everything, already. What is "You" is both tangible substance, your body, and intangible substance, your "form". The form is much more complex and continues to exist when the tangible substance of your body is no longer arranged in that form. In fact, you do not contain very much of the substance you were born with by the time you die. You trans-formed throughout your life. Only your intangible form continued to exist and evolve while your tangible substance was replaced one atom and molecule at a time. In fact, drinking a glass of water is transformational where your physical existence is concerned.
You remain You no matter the state of your being. A new "you" in a machine is now a form of you in the machine but is a unique expression of that form, and one that will remain largely static over time. No evolution, no replacement of parts, no self evolution. It won't be "you" for very long!