Galatians 3:24 "Thus the law had become our guardian until Christ, so that we could be declared righteous by faith. 25 But now that faith has come, we are no longer under a guardian." (NET)
I don't believe Paul is talking about the Ten Commandments or doing away with the Ten. He is talking about being "declared righteous". What must one do to be "declared righteous" - justified? Paul says "we are no longer under" the guardian that led us to Christ FOR justification. What then was the guardian? Answer: the system of sacrifices which began at the gates of Eden.
One is not justified by the Ten Commandments.
Romans 3:24 "But they are justified freely by his grace through the redemption that is in Christ Jesus." (NET)
Romans 5:1 "Therefore, having been justified by faith, we have peace with God through our Lord Jesus Christ,"
Romans 5:9 "Much more then, having now been justified by His blood, we shall be saved from wrath through Him."
1 Corinthians 6:11 "And that is what some of you were. But you were washed, you were sanctified, you were justified in the name of the Lord Jesus Christ and by the Spirit of our God." (NIV)
Titus 3:7 "And so, since we have been justified by his grace, we become heirs with the confident expectation of eternal life." (NET)
Seeking to be justified by any other means, was to sever oneself from Christ.
Galatians 5:4 "You have become estranged from Christ, you who attempt to be justified by law; you have fallen from grace." (NKJ)
You will say that you are not seeking to be justified through animal sacrifices. You just want to continue doing something that God commanded Ancient Israel to do. I understand your position. I just see no merit or benefit from the continued/restored slaughter of animals and the presentation of such to God. God doesn't want them. He said that He found no pleasure in them.
Psalm 40:6 "Sacrifice and offering you did not desire-- but my ears you have opened-- burnt offerings and sin offerings you did not require." (NIV) Hebrews 10:8 Previously saying, "Sacrifice and offering, burnt offerings, and offerings for sin You did not desire, nor had pleasure in them" (which are offered according to the law), (Heb 10:8 NKJ)
Some say it will be good instruction for those of the nations who come up to the House of the LORD, to learn His ways. Really? If I can "get it" - can understand by reading the Scriptures, and seeing drawings or models, why can't they? Why do they need to see animals bled out, and then burned? Why is it not enough to describe the activities, and then say that prophecy was fulfilled by Christ Jesus?