Alright, I'm getting close to tossing out insults.
Go read my post at 394. Someone needs to answer Question 1 from that post. I've asked multiple times. I've explained earlier in this thread why I think the question can't be answered. If no one can answer that question, then someone needs to explain why its the wrong question.
Because from where I'm sitting, if no one can answer it, its basically a concession that the CR system is NOT to blame, save-or-die is.
I'd rewrite the question, but then I'd get answers to the rewrite, and not the original question, which I tried to write out in decent detail.
Would I be right in assuming that your view of proper use of a save-or-die effect is to place it in a situation where the players do not actually have to save-or-die, but where they feel frightened that they might in the future? Because your examples of proper use of save-or-die spells and effects invariably involve situations where the party has some means of never having to actually roll the save. Sometimes its death ward, sometimes its magical rings, sometimes its fighting with their eyes closed. How frequently do you feel that players, who are in general playing well and not doing anything stupid, should have to actually make the roll and either save, or die?