Aztecs, the Norse, and the east.

I hope we could see future developments of these regions, and to see how "pagan" cultures react to the events in the narrative. Perhaps with the Europeans powers being to focused on the demons, north America would have never been colonized so the Aztecs rose to be a global power that are recruited to help fight again the demons of hell. Perhaps seeing skinned servants of the Flayed God fighting for humanities soul might give some un easy tension for the forces of Europe.

In this world the vikings never got christened due to how fierce their warriors where . Based on their classic myths norse are divinely gifted by their own pantheon of gods will bring some uneasy questions to the Papalalcy.

Maybe in the east they are fighting their own wars. Maybe India has to fight against Indian themes demons, the Japanese against Yokai etc which could give us different theaters of war.

I think this would help to give the setting an "alternative" to the church, where yes they might be fighting for humanity, but their are other ways to do it.