Light based damage spells.

[Hoshi]

I think the only thing I use holy for now is to kill a mob we're wiping to at 1% (or to snipe a killshot). It would be fun to see it do higher damage (I don't think we'd be a threat to blms with the recast and mp cost of holy)... but I haven't tried much to make holy do more damage (I'll have to equip my mab earrings next time and see how much that raises the damage).

[Luvbunny]

I agree with the OP, Whm should have at least a couple more light based damaging spells and SE should up the damage dealt with banish and holy. Granted it's not gonna make Whms become a nuker all of a sudden since your role is still a healer, but it is nice to be able to contribute some damage. They should make Repose a lot stronger and add repose-ga as well. Plus it would be nice to add a party based spell that would absorb damaging hits similar to what summoner gain via Titan blood pact. Whms could get the two spells, one for absorbing physical damage and another one for magical damage.

[Alkimi]

but I haven't tried much to make holy do more damage (I'll have to equip my mab earrings next time and see how much that raises the damage).

Using Beyond as your 3rd Atma which I often do on WHM since there's not that much useful after Allure and Minikin, fully charged Holy does somewhere in the region of 1700-1800 damage with good nuking gear.

Holy II (The version mobs use anyway) is significantly stronger than regular Holy, doing around 3x the damage. If they did introduce it I fear it would be toned down somewhat or not affected by Afflatus Solace, or you'd have WHMs throwing out 5-6k spells.