vicky_molokh says:
I'm not sure how appropriate commentary is before I know whether there's enough slots to join, but a thought caused by those questions (particularly in the Outsider and Celestial Creation context) is what is the world like? A lot of that will influence what sorts of pantheons are available, and what sort of forces are at play.
E.g. the possible pantheons and the context of relations between cultures and deities would probably look very very different in a futuristic Battlestar Galactica setting where gods rarely interact with creation directly, an ancient-classical Hellenic setting where Olympians are displacing the Titans and/or Cthonics, in America where the local pantheons are being driven underground by the Abrahamic one, in old Japan when the government is trying hard to prevent Shinto and Buddhism from mixing, and so on.
For the sake of simplicity, I'm assuming a generic "fantasy" world with a run of the mill, Olympian-style pantheon. There are many gods and goddesses with various domains, some larger and more powerful than others. This game would focus on the small gods, not the major players. Things like the God/Goddess of brewing, twins, travel, laughter, flowers, etc.
I'm building the Pathway Steps, Distinctions, Abilities, Stress tracks, and whatnot with that in mind, but the players can define aspects of the world during character creation. I like to keep things open.