Either way, religion(or religious fanaticism) is very much within the settings although it is a character trait which most roleplayers ignore or avoid. Embracing it instead would be, in my opinion, a big step towards the environment that Yliakum was envisioned to be by the devs.
Limiting character choices based on what "The devs prefers..." instead of just "What is in the Settings" isn't something I would like to see. It's wrong to force people to roleplay a single kind(stereotype) of character and it eventually makes things bland.
Or perhaps I could make a bunch of fundamentalists that'll make a huge "Jihad"

... but wait, that would be against the Settings!
If the devs want Yliakum to have all the same types of people strictly, then they should make it entirely NPC AI-based, without any form of PC.
I believe gods interventions should only happen on very rare occasions, and that, making something like that would be more appropriate through the use of NPCs rather than forcing players to follow with a single type instead of giving them choices on character creation.
The community will roleplay what they like, and not what the "devs envision", except if roleplay is enforced in a way that having non-religious type of characters will make you be banned, for example, but that is not the future I would like to see.
The more choices will be restricted, more it will sound to some kind of virtual acting instead of roleplaying.