You have just negated the Fall and all that it implies.
As Christ showed us when He gave life to the molding body of Lazarus, dead is dead. Unless we are born again by the Holy Spirit, we remain in darkness.
"For who maketh thee to differ from another? and what hast thou that thou didst not receive?" -- 1 Corinthians 4:7
You have not understood me properly. I am the one who claims we were created all in the same image and likeness, so Christ correctly asks "For who maketh thee to differ from another?"
Our persoanlities are an expression of what we have become through our fallen nature. Some are in the greater state of the fall then others; some are dead; others are slowly recouperating. God did not give us our fallen personalities. They are a result of being born in a fallen world. There is no place for them in heaven.