I don't know, I believe Adam was created with a physical body.
If Adam had a permanent body, his body would never have died as a result of his sin. This is the difference between mankind and angels. Angels have permanent bodies, so when they sinned, they couldn't die and be resurrected into a new body.
Adam's spirit never died because our spirits live forever. To be spiritually dead is to be separated from God.
I agree, but there is more. Our dead corruptible physical bodies will also be changed when Jesus returns.
I agree, but that thief's grave will also be emptied at that time. Whatever body comes from heaven will be joined with a resurrected body that comes out of the earth.
I don't know that a soul physically leaves earth because a soul is not physical to begin with, but I agree with the gist of what you said.
I think there will be some who will die during the millennium who will be in Christ. Once they are dead, the choice has been made whether to belong to Christ or not.
For one, the angels were bound in the pit in eternal chains, and have done literally nothing for probably 4,000 years.
No one is locked up in sheol. Just in torment. The physical death was Adam being removed from that physical body and placed into a temporal body of death. That the body died or did not die is irrelevant.
The thief is not dead. The thief went to Paradise. Jesus is not dead. Jesus went to Paradise. Why do you deny these words from Jesus:
Luke 9:27
"But I tell you of a truth, there be some standing here, which shall not taste of death, till they see the kingdom of God."
Matthew 16:28
"Verily I say unto you, There be some standing here, which shall not taste of death, till they see the Son of man coming in his kingdom."
John 8:51-54
"Verily, verily, I say unto you, If a man keep my saying, he shall never see death. Then said the Jews unto him, Now we know that thou hast a devil. Abraham is dead, and the prophets; and thou sayest, If a man keep my saying, he shall never taste of death. Art thou greater than our father Abraham, which is dead? and the prophets are dead: whom makest thou thyself? Jesus answered, If I honour myself, my honour is nothing: it is my Father that honoureth me; of whom ye say, that he is your God:"
Hebrews 2:9
"But we see Jesus, who was made a little lower than the angels for the suffering of death, crowned with glory and honour; that he by the grace of God should taste death for every man."
People call the point where the soul leaves this body of death, physical death, but for the redeemed, that is just the opposite. They don't taste death. The soul is transfered from one physical body to another: 2 Corinthians 5:1
"For we know that if our earthly house of this tabernacle were dissolved, we have a building of God, an house not made with hands, eternal in the heavens."
Adam left that permanent body from God, and entered the physical body of death. That was the physical death God promised Adam, if Adam disobeyed. So the reverse process happens when a redeemed soul leaves the physical body of death for the permanent incorruptible physical body from God. It was Jesus who provided the opportunity to do just as He did, and leave death behind to physically enter Paradise.
All spirits are waiting in heaven. Read about the spirits in 1 Kings 22. The spirit is separated from us, but not dead. That is why we are spiritually dead, and have the Holy Spirit on loan until the day of redemption. The spirit is our connection to God. But they reside in heaven with God to remain blameless and pure.