The Amil view, of the present symbolic 1000 years, is factual and legitimate of why the unsaved are among the saved.
It is exactly how, when and why God's Grace is extended to ALL people equally, until God sends Jesus to redeem ALL of His "New creatures", called saints.
But you blatantly disregard God's Word that clearly states those in Christ are no longer "the dead" but have eternal life, even while stuck in Adam's dead corruptible flesh.
That is the second birth. That adoption into God's family removes us from death into life.
No one in Christ will be found among the dead in Revelation 20:11-15.
If you claim some are resurrected to eternal life at that point, that is a second chance. Because the living will not be found among the dead at that point, unless they are given a second chance and accepting the second birth at that point.
One reason many amil have rejected and left pre-mill is over that very point that the dead are allowed to live in the Millennium. No one lives in the Millennium in Adam's dead corruptible flesh. They all have been removed from Adam's dead corruptible flesh. That is the point about Daniel 9:24.
"Finish the transgression, and to make an end of sins, and to make reconciliation for iniquity, and to bring in everlasting righteousness, and to seal up the vision and prophecy, and to anoint the most Holy."
The Law was not mentioned once in that verse. There cannot be a removal of sin, and everlasting righteousness if some humans are still hanging out in Adam's dead corruptible flesh. It will not be their choice. This redemption will be forced on them against their free will nature of sin. That is what happened to Adam. His physical perfection was taken away against his choice and he was forced into the physical body of death. Adam's choice was to disobey God, and the result was death. Since the Cross, Adam's dead corruptible offspring has had the free will choice to accept the second birth. It is not forced on them, nor are they forced to reject the second birth.
Under the OT economy, Israel was born into the Law with the only choice to reject the Law in unbelief, thus stripping them of their only means of salvation. So the promise in Daniel was not just to remove the burden of the Law. That promise was to remove sin, and thus the need for the Law in the first place. The Law only teaches us how sinful we are. In itself, the Law cannot save us. The salvation was the guarantee of the Covenant with God, and the Law was just the means of keeping the Covenant in effect.
This promise of God is to restore this current creation. Creation is not restored by simply removing Creation from existence and starting over. That would be replacement not restoration. Restoration involves placing humanity back into Adam's original body. Physical death was God replacing that body with another body, a body of death. That is the only Biblical replacement. Two physical bodies. One from God. One from Adam that God placed Adam and Eve into after Adam disobeyed God. That is why humans have no choice in being "the dead". The second birth gives as the promise that when we leave Adam's dead corruptible flesh, we have a permanent incorruptible physical body in heaven. The same body all will have during the Millennium. That is the removal of sin, and everlasting righteousness in this creation. This creation is restored, not replaced with a new creation. The NHNE is after the Day of the Lord.