Not for me.
I say, raise the bar for conviction, have a mandatory appeals court review the trial immediately afterward and execute them within 30 days.
Publically.
If they tortured their victims then crucify them.
You know what - human justice is not perfect. You just have to accept that. And in that context - punishment must be sufficiently severe to dissuade crime. We all so want to be ‘compassionate’ that we are letting the crime cancer consume millions of innocents and entire communities every year. It is misplaced compassion.
If I had my way, I would have a forensic team go over the evidence to ensure that the person on death row is in fact guilty as sin.
In cases like the Mansons or Bundy or Gaxy, execute their a$$es after a mandatory appeal and then review and then execution after thirty days, just like you said.