RDM/SMN having raises and BRD having a 45s cooldown cleanse is nice flavour for each job that every so often can take a minor load off a healer, emphasis on minor, none of these things sidelines or replaces a healer. Similarly healers having party dps buffs or afflatus misery doesn't detract from dps jobs. Bloodwhetting does not fall into this category, there is nothing minor about Bloodwhetting, it doesn't help a healer - it sidelines the healer.

PLD having clemency, doesn't harm the healer role, PLD's (1200 heal potency) blade combo by itself isn't harmful to the healer role, holy sheltron's regen I find more questionable that is a lot especially paired with 15% mit and if I had my way I'd probably cut both the blade combo and sheltron regen down by about a third so it's a nice bump during the two minute cycle and a good additional mit on what is already a really short cooldown - HS is more limited by PLD's gauge than it is by it's internal cooldown.

I have a DRK main among my close friends, to paraphrase them "If I want to feel strong I play GNB or PLD. If I want to have FUN I play DRK. I only play WAR if I'm tired or lazy and want to be immortal with no skill." I don't think that's good tank design.