Is it significant that Moses was required to make tablets and bring them up to the mountain top?
Is it significant that God reintroduced himself to Moses?
The significance I receive is that we are required to work at this relationship with God. God is not a flexible God, he stands firm on his expectation of each of us, he will punish us or allow us to be punished. There is a cost to to our sinful nature. Yet he is a forgiving and loving God that allows redemption.
I see this as our example how he wants us to be! You want us to live our life is a reflection of his example.