Interesting thoughts, but it seems to me, if we have free will but just choose a better way, then the thought of the bad way would still be there for consideration, just not acted upon. Then we go back to the Bible, where Jesus tells us if we look on a woman with lustful thoughts, we have already committed adultery. So it appears, even the thought of doing wrong, even if we choose to do right every time, is still problematic.
One thing we do know, there is no plan for dealing with sin after the great throne of judgement.... at least no plan that has been revealed to us.
We must remember Keith, that sinful thoughts are a result of sin in our flesh. Genesis 6:5; Jeremiah 17:9; Romans 7:13-25
We do have thought that are not driven by sin, but this has to do with our mind.
The angel that sinned, dwelled on thoughts that were in opposition to God, but this is because, unlike the Word, he was not perfected in love for the father.
Those who are perfected in love - that is, in God and Christ,
cannot get any wrong thoughts in their heart. 1 John 4:12, 16, 17
It's easy to understand it, when we understand perfection.
God is perfect to the ultimate degree. You cannot get more perfect than God, because that is the ultimate. Deuteronomy 32:4
God made Adam perfect to a relative degree - That is, Adam was created at the level of perfection God created him. So were the angels.
Now comes the growth, to reach the level of perfection God wants you to.
The Word reached that perfection, by spending time with the father, and developing the closest bond possible. There is no love greater than that of God, and his beloved son.
The angels who remained faithful to God, were also growing in love for God, but the Bible does not say they have reached that level.
However, I believe some have developed a great love for God. Gabriel, for example, who stands in the presence of God. Luke 1:19
Adam had the privilege of reaching a level of perfection that would have prevented him from sinning, but he failed to develop that love, and Satan introduced sin to him. Matthew 5:48
Thus all mankind fell far short of perfection. Romans 3:23
None were born perfect, but at the very bottom of the "ladder", so to speak.
Persons now have to strive to reach the level of perfection that Adam had.
This was made possible by Jesus coming to earth, and teaching the truth about God, so that persons come to know the love of God.
Through Jesus death, persons can have the effects of sin removed from their body, and thus not get sick, grow old and die, or have sinful thoughts just come into one's heart. Persons can be perfect like Adam, and then have eternity to reach the level of perfection God set for all humans to reach.
That does not mean persons cannot choose to think of our own free will to rebel.
The Bible says that this can and will happen after the 1,000 years. Isaiah 65:20; Revelation 20:7-9
As regards beyond the 1,000 years, persons still have free will.
I'm referring to those living as mortals on earth, here. Not the immortal ones in heaven.
Remember, the immortal ones in heaven cannot sin, because they are born from God. They are in God, and Christ, whose seed is in them.
I hope this is easy to follow.