Hi Deacon,
  

You wrote:

You have provided no evidence for your claim that heaven should be treated metaphorically.

Contrary to your erroneous assertion above I have provided "evidence that heaven should be treated metaphorically; you have simply rejected it."   The Old Testament has a great deal of information which conclusively establishes that "heaven" is often used as a metaphor for "earthy powers that be."  How much evidence do your want?
 
I wrote a 14 page paper documenting the use of "heaven" as metaphor or hyperbolic, and others have written books on that subject.  Surely you cannot be unaware of this.

Jude 1:6 And the angels who did not stay within their own position of authority, but left their proper dwelling, he has kept in eternal chains under gloomy darkness until the judgment of the great day.

The only "aggelos"/ messengers identified and described in the Bible that did not keep their first estate were Adam and Eve.

Ezekiel refers to a guardian cherub being cast from Eden the mountain of God to the ground.

We have been through this one before.  Ezekiel clearly states that the prince of Tyrus was "a man" and we have no reason given in the text to think that his father, the king of Tyrus was anything but "a man" also.  It is only your "fallen angel" bias that causes you to see the king of Tyrus as that "fallen angel."

If the angel who spoke to Daniel was an angel as you seem to agree, how could a human prince of Persia hold him up for three weeks?

I do not know.  You will have to ask him when you meet him.

What is the basis for you claim that Michael was Christ?

I have already explain this above.  Many Bible students down through the ages have recognized that "Michael" is a metaphor for Jesus Christ, i.e. the "first or chief messenger of the NC.  The one "who is like God" which is what the word "Michael" means according to the scholars.

Lloyd