As much as I like the idea of stronger light-elemental damage spells, I don't think people are giving quite enough credit to what's already out there; Banish III and Solaced Holy are pretty respectable chunks of damage when well-placed. With equipment for them on. Compared to non-damage dealing jobs like Paladin, Red Mage, and low-level Summoner.

... Okay, I guess Banish IV/GaIII/Holy II would be pretty awesome, but I think Repose is good as it is. We can't just bust out super sleeps like Blm/Brd/Rdm with Blm subbed/whoever else can do it, but our ability to sleep things at all is more of a "useful bonus" than a focused-on ability.