For those interested in the whole set up I use *without* rules you can download the most current file from my signature for the setting. Once I finish the actual rules, that will be in my sig as well, and then all of it will be freely available on the website. Which is a mess right now, lol.

Quote from MidnightPlat >>

I think Xalthu has it right, and I think it's reflected in the way gods and domains are described in the present core books.  Just like in mythology, gods are often associated with multiple domains, sort of like portfolios.  Just because attendant worshippers petition the god for divine magic within a particular domain doesn't at all mean the god's self conception has anything to do with that mortal association.  

How do gods become associated with domains?  The witnessing of myth.  Say you have a god named Alan.  Among the gods he's known as "The Sulker" with an incredibly despondent demeanor.  At one point some of the other gods get really tired of Alan's bit so they suggest he try cheering up by taking this jet ski the pantheon's giving him and try to tool around the mortal world with it, you know, have fun!  So Alan takes to the jet ski, and does tooleth around, and has an utterly miserable time.  Still some fishing crew witnesses this divine jet skier and recognize some of the markings associated with Alan.  Alan's now a sea god.  Nothing he can do about it, the prayer spammers got his number and they always call him from bodies of water.

 I think of it as “Gods as Conspiracy Theories.” Misinformed people inventing ways to impose order upon the chaos of the world.

Quote from AEDorsay >>

Quote from Xalthu >>

“The issue there is what happens when to clerics serving her come from antithetical domains to each other and have to spend the night in the temple, and how do I adjudicate piety properly?”

Theological debate. Opposed skill checks, best of five:religion, performance, religion, performance, religion. Advantage if the player actually rp’s what the character is saying. 
And if you end up with a sore loser: Thunderdome, two clerics enter, one cleric leaves. 

 
“my, my, look how the world turns, Raggedy man. One day Cock of the Walk; next, a feather duster.”

 Yeah. You get it. 

Quote from AEDorsay >>

for example: touch of death is something that all the clerics would have to have. So is Artisan’s Blessing. So is Twilight Sanctuary.  This is why I can’t do the “all of them”, because the Clerics aren’t allowed to just decide they only want these powers. They are servants of the Gods, and the damn deities will mutter in their head and send them off to do things that vary from freeing slaves to healing the sick to taking out that entire Warren there.

Can you make the Channel Divinities a rollable table? I don't know if you'd want to make all the subclass features rollable tables, that might be too much prep and planning every 'day' for a player.