We suspect several paladins would turn your question around and argue that it’s not that they are indispensible tank healers, but that they can’t compete against other healers for group healing. Ultimately, we think the problem is Holy Radiance. Light of Dawn is a finisher so it’s never going to be continuously available for periods of intense group healing without unshackling it from Holy Power. Holy Radiance could be changed however. Our original concept of Holy Radiance being a tool the paladin used to heal those around her never quite panned out – we had to keep bumping the range to make it a useful heal, which removed much of the positional gameplay. Currently it is potent, but fairly “fire and forget.” A paladin is never choosing not to use Holy Radiance, unless perhaps mana is very tight. A better model for Holy Radiance, and something we are considering for the next content patch, is as a cast-time spell with no cooldown that generates Holy Power (for Holy paladins at least). This would give Holy paladins an actual area-healing rotation -- Holy Radiance and Light of Dawn -- that they could use instead of the single-target heals. Currently Holy Radiance can just be layered on top of the other heals, so the paladin isn’t shifting into group-healing mode the way a shaman can focus on Chain Heal or a priest can focus on Prayer of Healing.