Why don't Paladins have any unique "Cures"

[Kitfox]

Thats funny, I don't recall that happening in previous games that had tank heals (unless your counting going through older content in higher level/gear?)

Nice job quoting me without the context. The key word there was "with current (FFXIV) content design", not other games. Tanks are assumed to participate in Raid DPS, you know, do damage. If they're healing, defending and so on, they're not doing DPS, and thus will be a liability for DPS checks. Someone has to make up the missing DPS. So either you drop one healer for another dps class to cover it, or the tank has to also buff up the party damage to make up for it.