The name "The Doors" is not taken from "The Doors of Perception" written by Aldous Huxley. It is from a poem by William Blake, "The Marriage of Heaven and Hell", and it says: "If the doors of perception were cleansed, every thing would appear to man as it is, infinite."
I think that "The end" is about the end of childhood. Part of childhoods end is off course the Oedipus complex. But there is more to it. The insane children are those who yet haven't accepted the codes of society. And how do we know something about the time before society's grasp. We can ride the "king's highway", which is Freud's name for the best way to the sub consciousness -- to be analyzing dreams. Someone is going on the bus -- the adult, and someone is left behind -- the child within. I guess.

Makaveli is his interpretation of Nicolo Machiavelli's name. Pac read Machiavelli's literature frequently while he was in jail. The Renaissance author wrote about achieving power, no matter how many people you have to step on. Do whatever is necessary to in order to achieve what you want. Pac wanted to get out of the lime light. How do you do that? Stage a killing of yourself. Now people think he's dead, and they leave him alone. "Makaveli" can be rearranged to spell "I am alive"