One thing I'm concerned about, on a meta level, is that I simply don't think "faith" will be a particularly fun thing to read about. We'll get an update where Ranald reacts to the crystal, and then that's it. Unless Ranald chooses to sponsor this research, then divine AV is basically dead. It won't go anywhere, it won't do anything, and it won't add to my engagement with the story.
But with "truth"—well, we will have new lore to research, actions where we try to get close to artifacts, a better understanding of how divine magic works—I think some people want to bring divine spell casters into the waystones, if not into webmat itself.
And that sounds really cool.
Okay, a little dangerous, but honestly, gods tend to be... Powerful, yes, but not all powerful.
Asuryan waited until Malekith stepped into the flames before smiting him. Gazul whipped out an orc Waaagh via a superweapon built by mortals. Sigmar failed Ablehelm in Sylvania. We mugged Mork.
Whatever divine wrath we stir up, it's not going to be biblical in proportion.
And that's only if they discover what we're doing—no worse than what happens if the Horned Rat learns about Queekish, or Sigmar learning about the Libre Mortis.