Hardcore Mode in WoW, would it interest you? It would be like Diablo 3's hardcore mode:
A player may create a Hardcore character - the true test of the player's skills.
A Hardcore character is the same as a normal character except for the following:
Hardcore characters' names are displayed in red on the character selection screen, in order to distinguish them.
When a Hardcore character dies, the game ends and you cannot simply reload your last save point because the character is gone forever.
When a Hardcore character dies, they are not removed from the Character Selection Screen, instead remaining there as a robed figure (as pictured) to remind players of their loss until the character is deleted by the player.
Only the Items the Character has worn can be looted by other players (if the player has allowed this before the character died). In effect, the game treats you like a mortal human being rather than the semi-immortal non-Hardcore characters, accordingly called Softcore by Hardcore players.
Hardcore characters are displayed in a more aggressive pose in the Character Selection Screen, depicting their tense state of play.
Hardcore characters are awarded more impressive Titles for beating the game.
Hardcore characters do not have access to normal characters' stash, nor can they trade with normal characters.
Other than these, there are no other differences in gameplay terms. Dead hardcore characters will even retain whatever position on the Hardcore Ladder they may have achieved (albeit with their names in gray) until they have been surpassed by enough other players to knock them off of the Ladder.
Hardcore mode is regarded by many as a more realistic playing experience.
Does it have to be like D3 exactly? NO.
Christ people get so angry at an idea at times.
Modify the fucking thing, I thought the concept was cool as people really love it in other games. Could be as simple as making it to 90, no deaths and receive a kick ass title and mount. Calm the fuck down.