If we can't get rid of the death penalty, which would be my preference, I would like to see two nuances added to the equation, both involving the victim's survivors.
1. Victims' survivors get one get-out-of-jail-free card to deal with the fucker personally. (I'm half kidding with this one, but the next option is serious.)
2. If they're not interested in the first option, the survivors decide whether the guilty party is executed or spends life in prison. Many (perhaps most) families of victims would rather the guilty person not be executed. There are several reasons for this; the most common one is they don't see how another killing will do anything to make right what happened, and another major reason is that death sentences prolong the suffering of the victims' families, dragging out a process for years that almost never leads to any kind of closure. It only serves to delay the grieving process, sometimes for decades. The death penalty is not for the survivors, it's for the rest of us. The rest of us should grow up.
A deterrence-based approach to criminal justice doesn't work. Never has, never will. It appeals to a certain mindset and sounds reasonable on paper, but it doesn't work. A reform-based approach has also failed miserably in this country, but it has succeeded in other cultures. So we're left with retribution based justice, and boy do we lean into this one with gusto in America. The notion appealed to me as a younger man, but I'm getting older and softer and would prefer we start looking at ways to incorporate a reformation-based approach utilizing successes from other nations who are perhaps a touch more civilized than we are. We should, at a bar minimum, start with prison reform.