How would they fix PLD 4.0?

[Shurrikhan]

By giving drk and pld a unique gameplay mechanic of their own that rewards you with higher damage and threat generation by playing them well rather than the purely binary defensive vs offensive stance.

Playing "well" is disturbingly vague, and the idea of being rewarded with what is usually a mutually exclusive benefit (damage and threat for having... mitigated? appropriately?) or having less than full enmity generation at the onset of a fight (since that benefit is waiting for you to... play... well?) should be no less worrisome.