I like it too. Its not really much stronger than Cure 2, but its instant, for a nice little burst.

It still sucks, its better on PLD and DRK, and worse on WAR, since it doesnt scale with any "+healing" buffs. Even defiance.
Tetra, lustrate etc should at least let it scale with Defiance, and ignore conv/ds/fey.
That would make if equally efficient on all tanks.