Loskalm

This week I plan to run a one-shot game set in Loskalm. I would like to know your ideas (official or not, I don't mind) about some aspects of Hrestoli Church (the write-up in "Men of the Sea" is very short and certainly I can't wait "Heroes of Malkion").

-How do you deal with caste progression? I'm not sure about it, but
I have thought that Commoners can become Knights when they have 1W in three professional abilities, Knights can become Wizards when they have 10W in three chivalric virtues (you know, Brave, Pious, Just...) and Wizards may become Lords when they have 15W in three wisdom-like, knowledge or magical abilities. Of course, it would be a rules construct, not exactly representing the game world.

-Is there any kind of inheritance or legacy of propiety or land
propiety despite the meritocratic system? Who appoints the Lord of a region and what are the requisites?

-Sure, the Hrestoli Church has the "Abiding Book", but I think they
have at least another scripture (e.g., the Rokari Church has Theoblanc's book).

Regards,

Antonio