I actually want to see more varied LBs. It's just getting so boring seeing RDMs use the LB3 when it's not so much for the damage factor but more I feel they just want to show it off. The AOE flash can get annoying not to mention any RDM would be stopping their DPS whilst the LB is in progress (BRD, SMN, BLM at least have dots to continue the damage).

In all, if a player is confident that the situation warrants an LB then just use it. Unless you know people are dropping like flies and a healer one might be more beneficial, but to each their own...