Originally Posted by
tinythinker
Ran out of characters.
To give a sense of what I mean, there is a trash pull. The DNC runs to the outer edge of melee range and used Ability A - he weaves forward doing damage as the aethertrail of his weapons (sleeves, ribbons, fans) slices through anything in his path (similar to some SAM animations but he keeps moving forward. The job gauge fills some.
Now on the other side of the trash pull, a different move. The players moves forward into the middle of the pack and uses Ability B, causing the character to to twirl higher and higher with the aether ribbons (again, trailing whatever weapons) whip around him until he reaches the pinnacle of the move and slams back down stunning the mobs. The job gauge is fuller.
Sensing danger the player tumbles out of melee range with Ability C. Standing at medium range, the dancer spins once in place throwing out a slice of aether energy that hits the mob pack, though this spammable does less damage. Using some energy from the job gauge, the dancer throws out a particular strong oGCD heal to the tank as an aethertrail wraps around her, then a party-wide buff as aether-silks fall from above.
Reversing the idea
So the previous comment and above illustration is healing/buffing by doing damage. It could even be automatic, like you do some damage and it send out healing energy (again this would be regulated by the overheat mechanic).
But, this could all be reversed. You heal to damage. So those moves described above earned by filling the job gauge as you heal. The problem here is that it encourages overhealing at the start of an encounter and makes damage too dependent on healing. By having a few fun damage moves as per the story above, you unlock extra buffs and heals or other effects, but you always have your most essential stock heals and one or two stock damage abilities no matter what. Yes, having fun attack moves on the gauge instead limits their use so that DNC can't just try to be a dps, but, they can be priced too high to be spammed constantly similar to how you need Thin Air and/or Lucid Dreaming to spam Holy.