Positional Requirements for Melee DPS

[Felessan]

but I have to ask, why is it that summoner, black mage, and bard get to lol faceroll the keyboard to obtain optimal dps from a SAFE range....while EVERY melee dps, (including Ninja) has to struggle with positioning along with over complicated rotations and being at risk of so much more hostile fire?

All have their own difficulties, it's not that bard and casters can faceroll to get max dps. Casters, and especially BLM have to deal with cast timers and "dps on the move" problem that requires skill and some practice to not be impaired by a lot during movement heavy fight. Bards have their priority system for dps and it really digs into attention making it quite hard on mechanics heavy fights.