People really have to realize that the job's role outside pvp does absolutely not dictate its job fantasy especially in pvp where everyone's a dps.
It's not supposed to be tanky or did you see Squall in FF8 be the tank of the group? He was the most straightforward combo focused one with additional magic enhancement drawing and junctioning enemy power to unleash later on. What he did lack in defenses, he made up with damage, speed and magic stat buffs.

If anything, Draw should have it's CD reduced significantly and gain role boost powers depending on the junction they are in.