some of this actually was in this game before, dunno about now. But you used to take more dmg from your back, attacking monsters from the rear increased crits i think. Positional combat seems to have gotten downplayed.

lancer still has increased movement speed in battle when you hit 20, and you can put that on any job, and they had jump for them in the dats. I think SE could add a jump back skill/ability to some classes though.