you easily hit 5k dmg inside abyssea with Razed Ruins alone. more accurate spells are better use of CA and Efflux as the chance of missing on those have been rather high for me :P

but the spell is still useful. 2set points to help make DA or TA and the spell does do good dmg (and pairs up with CDC swapping dex for str). i've had good success on Voidwatch with it as well.

if you think about it, were acc to be improved we wouldnt really use any other spell. the mp efficiency and 100%crit rate would be too much. if anything i would be up for less crit rate with more blu-equips to increase crit rate (the main problem with CDC atm), with the increased acc of course.