This is what I call a back door rationalization for what is not an explicit teaching in Scripture.
Who loves human sacrifice? No one. Yet, throughout human history sacrifices have been made. Trump recently reminded us 38,000 military troops were sacrificed to build the Panama Canal. If you read Scripture, you will find that God - in fact - sacrificed many to his glory, including the Egyptian military and Egyptian first born sons.
More sacrificed in Iraq and in dropping atomic weapons. The Secretary of State says it was worth it.
God tested Abraham's faith by requiring that he sacrifice his only son. This is not a God who opposes human sacrifice in all circumstances. It's so odd that you word your question that God refused what he commanded! In the end, he stayed the execution for Abraham proved himself.
What had to be sacrificed on the cross was a human sacrifice and certainly not divine.
- Scripture says repeatedly and explicitly that Jesus is a man. So, no back door rationalization that he is not a man.
- God is eternal and cannot die. Jesus died on the cross. This is the strongest proof that Jesus is NOT God.
- Scripture says Jesus is the 2nd Adam. What was the 1st Adam? A man - and nothing but a man.