The ill FATE of a Ninja

[kyuven]

That's nice hope there's range I don't think we need anymore melee

Ninja ARE a melee class, let's not kid ourselves. They have more options for ranged attacks than Monk or Dragoon, but the vast majority of their abilities are meant to be done right in the enemy's face.
What they DO have going for them is, except for a few attacks with rather sizable cooldowns, their attacks aren't dependent on positions. A ninja's DPS generally won't change if the mobs are moving around. In fact sneak attack hits harder from the FRONT of the mob (if you're wondering about the logic behind that, remember how most of your important bits are in the front of your body), but most ninja will be using Trick Attack in group situations for the debuff.