Thels wrote:Well, in itself it has no disadvantage other than the complete lack of any advantage.
The advantage is for trash tanking old TBC and Vanilla instances, where you might pull 10, 20, or 30+ mobs at a time and your holy shield charges will be exhausted in a second.
I think the OP has an interesting idea, and I've been playing with it as a possibility myself. But yeah, I'd really only be doing it for pre-Wrath instances where it's nice to see if I can get 102.4% WITHOUT Holy Shield, because my block value is high enough that 102.4% from stacking block, each block IS the equivalent of a dodge or parry because it's a 100% damage reduction either way (since old world mobs hit for less than the likely block value of such a block set).
