Fairness is affected by each and every one of these considerations. The question becomes, who deserves the death penalty and under what circumstances. It would seem as though integrity would be a reference point for the fairness of the death penalty. The fundamental question is whether putting someone to death as the punishment for killing another has integrity. We already know there's no integrity in the way the circumstances of a crime are evaluated.
Statistics document the unfairness of the sentencing and execution of the death penalty.
No one with any integrity can claim that we have a system that fairly sentences murderers to death and fairly carries out their execution. If we are going to execute someone who is accused of murder, let's just admit that we are caught joining them in the lack of integrity of their actions by murdering them in return. It may give us a feeling of justice, of revenge, of stopping others who might murder, but let's not pretend it has integrity. We must come to terms with the horrible, irreversible, nature of murder. Integrity and fairness have been forever shattered by the brutal crime of killing another, and they can never be restored by any punishment, even death.