So, while listening to "Gypsies, Tramps & Thieves", a rambling thought came into my mind: What preaching is going on outside the big churches?
Now the theology of Immoren is one of my favorite things about it, as its a bit more unified than your usual pantheistic-til-you-drop fantasy world. And we do have some very good information about the religious mainstream. But I'm wondering what goes on outside of that.
Generally I'd wager to imply that big two religions are quite Abrahamic in its organization, so cherry-picking some historical movements and facts always is a good starting point. The big item is is that we're basically pre-Reformation, i.e. not very splintered. Sure, there's the Old Faith vs. the Protectorate, but that's basically Eastern vs. Roman Church, with a bit of Jews migrating to Israel mixed in. So as "modern" as the rest of the setting is, there seems to be no obvious equivalent of Puritans, revivals, etc.
So we might be better off with more medieval structures, i.e. monasteries, pilgrimages etc.
I do guess that we'll have less traveling religious students, as the University education seems a bit more secular (a lot of poetry and music arose out of those vagabonds). Still, monasteries aren't as frequent. As much as silent contemplation fits with Morrowan ideal, there's simply not as much funding available ? aristocrats tended to found monasteries left and right, as they basically served as prayer factories to speed your travel through purgatory.
Still, the Ascendants allow lots of "attack surface", where a considerable amount of sectarianism can happen, some of which will move outside of normal church territory. Especially now, where the church just can't pay that much attention anymore.
And there's bound to be lots of small groups that orbit around the Old Faith and weren't swallowed by the Protectorate. Menite or Menite-ish sects, maybe mixing with lots of old tribal lore. Maybe even a few Kardh and Morrdh throwbacks/influences.
There's not a singular locus like Martin Luther, but I would say that the recent wars will cause quite a lot of friction, which will set some fires to the established church structures. The Menite/Morrowan lay preacher in Ternon Crag won't be alone in his "heresy". I don't even want to know what the rise of the Skorne will do to Western Immorens theological landscape?
I do intend to follow up on that germ of an idea a bit. Quite often the religious themes are too easily turned into simplistic cliches by players - Morrow's church being a somewhat do-goody background resource, the Protectorate being more about totalitarianism than religion. A few more "splitters", lay preachers, traveling mountebanks mixing alchemy with religious ideals etc. - bringing a bit more 30's years war in the often too technocratic conflict.