Why don't they put a to-the-death arena and another not-to-the-death arena?
You could have both. If you want a fight to the death, you can have it! If you want to just punch your friend, you can also have it!
Because a good dueler will never get a duel if people can dodge out of it easily. I don't think you could have a good match system like softcore could because of the obvious reasons, death. Not to mention hardcore should stay as it is, hardcore.
^Indeed and there won't be any pvp in the open world so the only chance really to die is either in the arena or from mob/boss which is a lot better than D2 so come on, if you don't have the balls to play hardcore just don't play it.