Anyone who works towards the completion of a mission gets 30mins of sleep bonus.
Your god moves faster giving them a greater chance to get tokens.
Your may be rewarded with demi-god status if you're deity has collected the cherry token from the gameboard. If this happens the player will become an ally of their deity and guard a random area on the gameboard like the existing Immortals.
If the demi-god survives long enough for their deity to win another scenario with the cherry token, there is the chance that they will be raised to full godhood, becoming a deity in their own right. If this happens, the player-god will have it's own religion enabled for other players to follow, complete with spells. The player-god can also move around the board in the same manner as the existing gods.
Current information suggests that as demi-god or god your account will become unplayable.