Sure, we have signs, and that's nice and all, but I think that a Patron Deity feature would help add to the depth of your character, and could give you maybe an extra daily power similar to the blessings you'd receive when you did the pilgrimage in Knights of Nine. Let's say, for example, my patron deity was Shor, I might have a once a day power that would give me a damage bonus against npc's of Meric race, or worshipping Stendarr would give me an ability that could dispell negative magics(Stendarr's Mercy).
It wouldn't have to be a power though, it could also be a bonus to an attribute. Like worshiping Dibella could give me a permanent bonus to personality.
Thoughts? What Deities should be made available? Should it be restricted to the Nine Divines, or should it be race based? Should Daedra be included?