It looks good. I understand and appreciate the attention to detail you're giving. Having deities with so much detail is... Awesome. Most
statically made deities aren't so detailed.
So, will magic be an important part of the game?
I think it'd be interesting to form a cult, or have cults form on their own, that are opposed to deities and seek to remove them from power by force and/or disbelief (Without making it a one-sided commentary on RL religion). While it'd be cool to be able to do that using pure physical prowess, fighting a being equated with godhood with just a bit of muscle and cunning on your side would be a bad idea. Having magic would also solve the tools thing, since magic, or psychic powers (Avoiding the "Is magic magical if it's understood and controlled" thing) is a very potent tool, and would also allow for creatures that can't talk communicate mentally.
Having a number of modifiers for the game would be ideal, similar to Dwarf Fortress's race personalities, but for the world in general as well as for races. Starting up a world with 0% spirituality and trying to convert the masses would be fun. Being able to choose how random the world's races are (And if it includes humans and other creatures from earth) would be awesome.
On that note, how far will people be able to progress physically? Far more than here on earth without magical assistance? How realistic do you plan on wounds to be?
Finally: Do you have some sort of plan for how and when you're going to do this? I just realized that that's one of the things I see in most successful indie games, but I didn't know if you had one or not. I'm asking these questions more for myself than to help with the design process, but I guess the result is the same.
Oh god. Pun intended?
I noticed it right after I wrote it. My best puns happen on accident, unfortunately.