Realistically. I think all they need to do is change Divine Storm and Crusader Strike to deal Holy damage instead of physical.
Do that and our threat should be fine via talents.
Sure Aegis is sorta okay. But right now, my Damage Block is 13. Aegis’s 30% increase is nothing. Just like how Shield Specialization is useless…even at 60; best shield in Vanilla only has 66 Damage Block.
So I rock Divine Storm or SotM.