I know this is an old thread .. but this seems important:
As far as I know there is no reward in game for following/worshiping a god/deity. There have been a few occasions where a Xiosia blessed a character (gave gift/boosted stats) but I don't think this is a frequent occurance.. (nor should it be) . I could be wrong, but perhaps Talad, and Laanx and Dakkru should be reaching out too ?
The gods would be much more believable if they intervened with players, guilds, or religions frequently by giving temporary gifts or powers to players or members of observant guilds and religions perhaps. By stepping into the world and asking (or demanding) for certain things, or giving special quests.
What I would propose is to have the game mechanics provide the player with some reward for following ONE god/religion. ( this could easily be enforced easily via factions points )
A player's commitment to a given god could be direct ( as a result of /pray-ing or doing something ) or indirect ( though association with a religion or religious guild, or by wearing a religious artifact )
To make the religion practical it should have an effect on the character. Perhaps having a certain level of faction with a given god would aid in war, crafting, casting, hunting or whatever... ( via stat bonus or skewing ones odds when looting or mining etc.. )
Also, if god intervention was more believable/meaningful as illustrated above players might be more inclined to include these deities in their character's lives. ( I hear other players speak casually about the gods in passing, but its usually just "xiosia bless" or some other catchy phrase picked up from a book or quest )
One more thought, if a god's willingness to participate with players could be influenced (negatively or positively) by the actions of players then perhaps there would be some degree of religious zeal ( perhaps even some nasty religious wars

)
Just food for thought...