Utilty in this game is pretty bogus anyway. This is pretty much the only MMORPG I can think of where CC effects even work on bosses and that seems to be only done so that you've to pick 2 classes that can silence for High Voltage. If you want bogus utility, I'm sure it's easy to come up with an equally bogus encounter that requires Freeze or Apocostasis, so I'm not too worried about the utility or lack there of on a BLM, because nobody really has any utility to begin with as the game is designed with gimmick encounters to give the illusion of utility.