You live in sheltered world if you believe that is what requires death sentence. From what I hear, Texas is very happy to make death sentences with little review, and are proud of it. That may be true in Florida, too. America is very quick to give death sentence without jury to those living in middle east and north Africa. China and other totalitarian countries like Saudi Arabia and Iran are much happy to give death sentences without trials, and even democratic Russia is known to give death sentences that are not just. Also, supposedly 90% of accusations end up never going into court, and get settled because of threats of much harsher sentences. Even if not death sentence, many people in current "better" system have many years of their life stolen from them as they spend it in jails. I do not think it is very difficult to come up with better system, and at worst, we will just just as horrible system as we have now.