I don’t understand what you mean, brother. I believe verses 20 and 21 look forward to the time when Christ returns and the Millennial kingdom and finally, the Eternity come to pass—when creation will be perfect again as it was in the first earth age. This is the hope we have as Christians and what we wait for.
Look at your verses you have posted from Romans 8. They are the tail end of what Paul is saying in this stanza. But the beginning of your verses begins with the verses before yours. And what verses you quoted relate to the verses before. Verses 20/21 shows us who Election/Predestination belong to from your verses. They belong to CREATION. So ALL humans have been Elected/Predestined.
20 For the creation was subjected to vanity, not willingly, but by reason of him who subjected it,
21 in hope that the creation itself shall be freed from the bondage of corruption into the liberty of the glory of the children of God.
So it was God's desire that ALL Creation be FREED and become His children. This is what predestination/election is all about. But FREE WILL is what negates that.
2 Constants we should NEVER forget:
1.
11 Say unto them: As I live, saith the Lord GOD, I have no pleasure in the death of the wicked, but that the wicked turn from his way and live; turn ye, turn ye from your evil ways; for why will ye die
2.
33 And the LORD said unto Moses: 'Whosoever hath sinned against Me, him will I blot out of My book.
It's not God's desire that His Creation dies. But who sins (not repenting) gets blotted out of His Book. His Book is the only Book that matters.
The Reformed doctrine is a complete lie knowing what Paul really wrote here in Romans 8.