Question for Ciderhelm and other prot warriors

[Lucent]

I figured i would ask you since you have been a protection warrior way longer than myself.

Would it be over powered or unbalanced if the damage we absorb from blocking melee attacks could also work against spell attacks?

for instance:

Your Frostbolt hits Warrior for 2200 (300 absorbed)

I posted this in the warrior forums and well... you know how that can go.

what do you think?