It was mentioned months ago, but it's worth restating:
You'll lose to the Amurites unless you can kill their most powerful casters.
You need some Marksmen, probably Assassins, though Shadows are great. Obviously they can't hide from Deis Dei, but you can just keep them with your other forces.
Nox Noxis is very powerful, but unless you are sure you can take it relatively easily it's not as good as having Auric on your side in the war...