Need help / advice for this tank roulette situation

[MirielleLavandre]

Only problem with the idea of letting a dps die is that many healers (myself included) heal everything regardless of how or why / barring terrible times when one dies so often it is more mana and party efficient to leave them dead for a lil). Thus, a dps who pulls some will probably be healed, and then the mobs will attack the healer. Would you then let the healer die, too? It isn't the tank that 'let's ' people die, really - it is the healer, if anyone.