Mortal death is a meaningless concept to God. With or without a body, we are always present before him. So what does it matter to him to command or allow death. Only mortals fear death and see it as a negative thing.
Christ's death has the same significance as his birth. In one he acquired a body and in the other he loses it. To God the Father, he was always present before him.
As for his death, Christ could have chosen any number of ways to leave this world. Why he chose the cross is a mystery to me. It was not necessary for paying the debt for sin, so was the extra suffering to put on a demonstration for us to take lessons from or to help him with knowing "how to succor his people according to their infirmities"?