I can't stand it when the melee dps try to wait for a 2 or 3 bar LB, when it's pretty obvious that by the time it's filled it will be overkill on the boss. I'll steal it from them if I'm on BLM or SMN so it's not wasted. There is ZERO need for 10k+ damage on a boss with only 3k left. Just because you like seeing the bigger number is only hurting the group. I agree with the OP. If the LB is full at the start of a fight, use it ASAP!