A very nice thread, Shu!
!! To me, what dictates who you are, are the resulting fruits of your actions. The physical body carries no meaning to what you are, it's just a temporary cage for your soul. Indeed, I believe that bodies are none other than clothes. That's one of the basic premises of reincarnation. Anyway...
What is you, is your soul. Nothingless less, nothing more. And to see the reality, hidden beneath the mist of maya or illusion, one has to attain nirvana/moksha [salvation], until then, the real truth cannnot really be seen.
That's just my opinion. ^_^