LB as it stands I feel is only a gain if it is used during downtime or if can push/skip a phase. Or if you run with pugs know they won't use LB to save their lives and just use it for them.

Caster LB3's i have a special disgust for since they blind the whole party to any mechanics happening. Specifically RDM.

BLM LB3 I feel takes too long to do it's damage.