I really can't understand why Flash haven't been given a potency on its trait to today. Like 30~50 wouldn't be bad and would help PLDs to actually do some AoE damage instead of rely on multiple Goring Blade and Scorn. But outside than that PLD is a great round class that provides many utility to the party.
And... Identity? Sorry, no job in this game lacks identity. Some are weaker? Yes. But Paladin is not one of them.