When will defense be as useful as offense? For instance if offense up is a 50% increase to offense, that results in a considerable bonus to damage given. So where's a defense buff? Defense up should reduce incoming damage by 30-50% instead of effecting the defense stat, because the defense stat is worthless.
This would make defense and healing teams actually viable again instead of only the existing meta of speed and attack. I doubt it would be enough to dethrone poe, as he does speed, turn meter control, and expose, along with target limitation. But it might give us more options