Hardcore Characters

Would be cool to have a toggle on the character creation that let us create a Hardcore character, that when it dies it dies and you need to start a new one, + being forced to play in Nightmare difficulty, i guess the easiest way to add this is in offline mode, but if it was in online mode would be cool too + some kind of an icon on your name that indicates to the rest of the players that your character is a hardcore one, could bring some kind of a challenge for those players who wants to have a difficult time and would change nothing on the average players, like making all the way throug the questline till the watch without dying and then farm all the vaults/boss rushes too, i could see some people using this characters + some friend to give them endgame resources, and i think the only way to prevent those are or only beign able to do it in offline mode which at the end that doesnt matter since its only your character and some friends or that you can only make a party with others hardcore characters, that way you could only get endgame resources from non hardcore characters when you are actually in endgame, which would keep opportunist players held back to actually do the full questline in Nightmare without dying