Your saying eliminate the save at 0, Ok I get it now. That wasn't clear to me in your previous posts. I will think about it, but I am not inclined to change from the MM version just yet.For the die at 0, its no save. If the bow brings you to 0, you die...no con save, no death saves, just done. You used the mechanic on some of the high level dragon breath weapons as an example.
EDIT: Never mind. I decided to add it. Now it has both traits!