I have often thought that it wasn't necessarily the format of his death per se, but the sybolism behind it that was important.
It is believed in christian circles that his death bought our lives - I never understood that part. Why does God need for His son to die a horrible death in order for Him to find it in His heart to forgive us our imperfections when He Himself made us that way. Remeber, He made us perfect, our bodies and minds in the beginning were perfect in all ways, then Adam and Eve sinned through free will, then God changed man into an imperfect being. He made us the way we are and then requires a perfect sacrifice to "buy" our souls back. Since no perfect humans exist anymore He has to send one down for that specific purpose, and we are supposed to be guilty for his death and grateful at the same time.
It doesn't make sense to me.