The problem is that there are too many Dr. Phil's in the western cultures. Penalties for serious crimes are a joke. Drastic acts call for drastic measures.While it has already been considered and deemed unavailable due to the cruel and unusual punishment issue, this is one time I don't disagree with you.
I've been to countries where the law and punishment are very serious and no joke. At customs there is a huge yellow sign with bold black letters "DEATH PENALITY TO DRUG SMUGGLERS", and they mean it.
Google "The Bali Nine". If this country wants to deter criminal behavior we have to get serious about it.