I like where Ogulbuk is going, but imo, this should not be in hard content. I mean, if i understand well, the temporairy healers/tanks would have lower capacity in doing these roles and that's a good thing, otherwise, what would be the point of having a PLD or WAR at all ! One would just go DRG knowing he can tank as good as a PLD in Coil with his tanking stance.

Now, it could work well for XPing in dungoens before 50, but imo, there are alternatives, already, to get XP (fates). What i wish would be reducing the DPS queue time for endgame content, in pugs with DF (Primals and Coils).