I agree. On my view, it's ultimately a quantitative question. E.g., if we had a system where 1 unjust execution avoided 1 million being killed by drunk driver

I agree. On my view, it's ultimately a quantitative question. E.g., if we had a system where 1 unjust execution avoided 1 million being killed by drunk drivers, I'd chose the unjust execution. But if those numbers were reversed, I wouldn't. But if I'm being honest, I can't justify why someone should prefer my ethical framework over some other. So I'm not sure my opinion means much in the end.