We disagree.
I'm not talking about JM capitulating mid-trial by dropping the DP. Once the DA decided to retry, the retrial should and will go on until whatever conclusion.
And I'm not suggesting that AZ law be rewritten solely because of the JA trial. I don't know how much an anomoly JA's retrial is, because I haven't read up enough on those 4 other penalty retrials.
Even if all 4 others went swimmingly, though, that wouldn't change my mind. Sometimes it takes an unusual single circumstance to illuminate flaws in a system. I think the JA retrial has done just that.
Bottom line, I don't think there is any equitable way to conduct a DP penalty retrial. For better and for worse, the jury sitting now is experiencing an entirely different trial than did the first jury. They've "missed out" seeing JA on the stand for 18 days, and thus don't have the context of seeing her attack the prosecutor, smirk, tell endless lies, etc. etc. etc.
And so much more. Toss in the additional reality that the definition of mitigation is so wide open, and the rules about admissibility so lax, that even a sterner judge wouldn't be able to prevent an unremorseful killer from using a retrial to inflict additional pain to survivors.
JMO, but once is enough.