I'm not so sure I agree with you. The human problem has never been with the law, but how to obey it, and God's problem is how to reverse that situation. In other words, the problem that God has (which He has resolved through Christ) from the beginning has been determined to accomplish was to provide a means by which man can find strength and power to obey the law, and that through faith in Christ. The prime function of the holy Spirit? To give power for man to overcome sin. Sin is that which brings death. The law is that which legally confirms the sentence, but Christ came to undo all that. Not by taking away the law, but by taking away sin, and providing the means by which we may live in obedience.
If a thirteen year old who had just reached puberty asked you if they could attain to Heaven if they didn't obey the TC how would you respond? I imagine you would reply ''No''
Let us suppose the young teenager understands what is entailed in obeying the TC, their eyes are wide open, Before them stands the tenth commandment: Thou shalt not covet, thou shalt not desire what is not yours to desire/thou shalt not lust/thou shalt not dwell on any impure thought.
I imagine the young teenager would be petrified at the idea of impure thoughts.
'''I don't want to go to hell, I must not dwell on any impure thought'''
Heaven or hell, for them can be decided upon by this issue. What could be a more terrifying thought? Can you escape thinking of what you fear, or, will thoughts of what you fear consume you?
In the following Paul is speaking of when the law came to him as a young pharisee, at the age of thirteen I believe when a young Jewish lad would make a commitment to God:
What shall we say then? Is the law sin? God forbid. Nay, I had not known sin, but by the law: for I had not known lust, except the law had said, Thou shalt not covet.
8 But sin, taking occasion by the commandment, wrought in me all manner of concupiscence/strong sexual desire. For without the law sin was dead.
9 For I was alive without the law once: but when the commandment came, sin revived, and I died.
10 And the commandment, which was ordained to life, I found to be unto death.
11 For sin, taking occasion by the commandment, deceived me, and by it slew me.
12 Wherefore the law is holy, and the commandment holy, and just, and good.
13 Was then that which is good made death unto me? God forbid. But sin, that it might appear sin, working death in me by that which is good; that sin by the commandment might become exceeding sinful. Rom7:7-13