Don't generate any doctrine from the Rev by itself. It is a montage, a work of art, apocalyptic literature. It is not a NASA countdown sequence manual.
Your doctrine is not in 2 Peter 3 nor in Romans 2.
Christ returning to judge the living nations (only) is different to the last judgment of Rev.ch 20.when all who ever lived are raised to that judgment.
LA
There are no separate judgements. When the NT uses the term 'nations' it is a collective plural for all the Gentiles. It does not mean Turkey, Ethiopia, Germany and judgements on them, etc.
Yes. everything is done through or in relation to Christ and individuals. Rom 11:30. He has bound all to sin that he may have mercy on them all.
No OT passage is about the millenium; it is images, themes and motifs of what would happen in Christ. The NT tells us this many times and quotes it that way many times, and it never has anything going on with individual nations as we know them at the 2nd coming.
What is your point? You have to make comments, because these same verses are about what I'm saying as far as I can tell.
Since there is no NT basis for a theocracy being restored to Israel, this kind of passage is fulfilled in Christ, but expressed in terms that the people in the kingdom of Israel period (900 BC) would understand. Their problem is the prophets. Daniel, for ex., comes along and tells them the kingdom that's coming would be made without human hands. Go figure. The fulfillment is not like the original vision. The "government" is not actually on a person's "shoulders" (Is 7) etc., etc. David's promises get transferred to Christ, Acts 2, 13, Isaiah 55, and Christ is enthroned in the resurrection. David's fallen tent is raised by the nations believing the Gospel, as the church council quoted (Amos 9).
That's the pattern. Get used to it.