Quote Originally Posted by wereotter View Post
A healer that can keep 100% DPS up time would likely be either too broken to work in the game, or too weak on the heals to really do what it takes after a Charybdis style attack
Seeing as the damage output could be lowered to compensate (all skilled healers actually attack currently anyway) the higher up-time of offense, balance is not an issue.

What is an issue is damage without a target to damage. There are invincibility phases in a bunch of bosses, some of which damage during those. Just about all ultimates involve invincibility and if they come after AoE that drops the party members low on health...good game, try again. So every healer needs straight healing of some sort (by straight, I mean one that can be done without any enemies at all and in some sort of bursts).