Once you start speaking for the Almighty, and deciding what would never be done by the Almighty, you're pretty far out into your own fantasyland. God rewrote the entire central message of the Bible, and brought forward a New Testament to replace the Old. I'm thinking that folks back then might've thought that was also a "God would never" notion.
I hardly claim to speak for The Sovereign God of the Universe, but His Word does speak for Him, which I quote below.
And God never replaced the Old with the New.
The New completes the Old message.
Nor does He change, but you can believe whatever you want to believe.
Hebrews 13:8
James 1:17
Malachi 3:6
Numbers 23:19
Perhaps you can quote somewhere in Scripture where He might allow sinful-vile humanity to replace their DNA as a substitute for Christ’s One-Time Sacrifice?
I’ll wait patiently...