I'm somewhat inclined to agree with you here, to a degree anyway. Now ask yourself this----
Isaiah 66:24 And they shall go forth, and look upon the carcases of the men that have transgressed against me: for their worm shall not die, neither shall their fire be quenched; and they shall be an abhorring unto all flesh.
This is clearly meaning after the 2nd coming and is occurring during the new heavens and new earth. Unless people could still transgress against the LORD after this, what is the point in them going forth and looking upon these? I tend to think it is a further warning to the mortal survivors remaining after the 2nd coming, that if you transgress against me as well, you too will meet this same fate. They are then given a thousand years and are tested one last time when satan is loosed.
I have always concluded that the creating of the new heavens and new earth are not instantaneous, but is a process over time. Isaiah 66:24 seems to somewhat prove this theory. How? Compare that verse with the following.
Isaiah 66:24 And they shall go forth, and look upon the carcases of the men that have transgressed against me: for their worm shall not die, neither shall their fire be quenched; and they shall be an abhorring unto all flesh.
Compared with---
Isaiah 65:17 For, behold, I create new heavens and a new earth: and the former shall not be remembered, nor come into mind.
and the former shall not be remembered, nor come into mind----And they shall go forth, and look upon the carcases of the men that have transgressed against me
How can both be true at the same time?