Sorry, I clicked on the submit button before I had finished.
So, the question is - what does God want to communicate to us through the rituals of blood sacrifice?
It is not about what God is 'pleased' with. God is not and has never been 'pleased' with sacrifices, in the sense that he gets any kind of pleasure out of seeing his creatures (animals are loved by God as much as we are) slaughtered. Rather it grieves God that this must happen.
However, what he wants to convey to us is some inkling of the consequences that sin has on the world. When my sin exacts the death of an inocent creature, I cannot easily ignore the message that my sin is grave and costly. When it is a gentle and inocent lamb, it is one thing. But when it is the death of the God-man Jesus Christ himself, that is altogether something else.
The question should be then - what is it about my sin that requires the devastating punishment of someone who has done nothing but love me and the world?
No other religion deals with this issue. Sin is not faced head on in any other religion or philosophy in the world. In the Old Testament and more fully in the New Testament alone is the absolute extent of the destructive nature of my sin made clear. I can only begin to understand the gravity of my sin when I realize that my wilful sin can only ultimately be dealt with by the death of God himself (in the human person Jesus Christ)! It is only his inocent blood that can make adequate payment for my sin.
The reality is this: if I sin and subsequently I am killed as punishment (as is just and fair) then God is satisfied that I have paid for my sin. But he is forever grieved that the relationship that he created me for with Him cannot be restored (because I am no more). However, if another life can be substituted for mine, and the punishment can be fully paid in this other's death, then God and I get the best of both worlds: that is, my sin is fully paid for, and because I am set free from the power of sin, God is able to restore the relationship he craves with me. This is the heart of the gospel (John 3:16).
This is the real message of the New Testament. It was hinted at in the Old Testament as a glorious day to be looked forward to, but the reality is in the advent of Christ. Sin is awful and hideously destructive, ultimately leading to the total destruction of the first creation. But in Christ, through his victorious death and resurrection, a new creation is being birthed that is better than the old creation because it is based not on innocence, but total and absolute forgiveness! And this forgiveness is not based on the whim of a God that just chooses to forgive, but on the basis of a legally binding reality - the payment of the sin of the world through the death of Christ, and made complete by the pouring forth of the Holy Spirit into our lives, made possible only because Jesus (being inocent and thus unworthy of death himself) was raised from the dead and lives to infuse us with his own nature through the indwelling Holy Spirit, who is working to bring us to maturity so that we will be ready to live in the new creation free from sin in all it's forms.
Not a short answer, but I think will answer your question.
You really need to read my post 86 to get an alternative answer.
Are we the ones needing to be punished (disciplened) for our actions and does disciplen not show we are children?
Could God forgive sin without the need for a human sacrifice andwould that be good for us to go unpunished?
Are you suggesting God tortured Christ?