I was doing my Sons of Hodir dailies today as Holy (still working my way to exalted), and it struck me that if Shield of Righteousness had a Spellpower coefficient, it would be really useful for Holy soloing.
Shield of Righteousness right now is:
Damage = BlockValue + 400
Since Strength now contributes a lot to block value, Protection and Retribution get a lot out of the first term, and the 400 is just icing on the cake because 200% of block value was too powerful. But since Holy has no strength, the second term dominates, and the first term contributes less damage. My ShR hits for about 670 damage.
But if Shield of Righteousness looked like:
Damage = J*BlockValue + K*Spellpower
It would suddenly be a lot more useful. Both Protection and Retribution have talents granting them a small amount of spellpower, so they won't miss the base 400 damage. But it would make the spell scale for Holy, and give them a nice extra attack for soloing.