a big issue is, like someone mentioned, is that the warrior's strongest combo is the enmity one, while darks is not. square needs to fix this problem, because i have had many times where i could not keep doing my enmity rotation (as then the mp drop is atrocious), as well as without grit, darks enmity is VERY LOW compared to the other two tanks, which is not ok.

problem: the war is constantly doing their enmity combo.
problem: dark damage rotation doesnt boost enmity at all, but is the main rota and needs to be done for mp restoration.
problem: they have berserk. dark knight 'passive berserk' is blood weapon. it comes up more often, but it is locked away with grit... which is stupid and imbalanced.
problem: square made war work well with paladin. they were lazy and sloppy with dark as far is this goes.