Should Defiance affect ALL healing received?

[Argyle_Darkheart]

As I am sure many of you are aware, actions that increase the healing input/output via healing magic (Defiance, Convalescence, Mantra, Divine Seal, Fey Illumination, Dissipation) do not affect healing abilities, or really anything besides healing spells.

Prior to Heavensward, Defiance and Shield Oath (Grit) were pretty much on par with one other in terms of their base effect. That is, 20% damage reduction is equal to, in effect, 25% more HP and 25% more healing. While Defiance only has 20% more healing, rather than 25%, it's about equal.

Now, with the inclusion of multiple potency-based healing abilities (Lustrate, Indomitability, Asylum, Assize, Tetragrammaton, Essential Dignity, Collective Unconscious), Defiance has fallen a bit behind. Shield Oath and Grit, however, do receive more effective healing from any and all potency-based healing sources.

Do you think that Defiance's base effect should be, or is supposed to be, weaker than Shield Oath's and Grit's, in this fashion?

Furthermore, if you're interested, how do you feel about other actions that affect healing input/output? Should those affect non-spell potency-based healing as well?

Discuss.