In BG the purpose of temples was to provide the player with a means to heal, resurrect and identify.
This function seemed a little bit redundant to me, provided that there were easier ways to do this.
Reload the game instead of resurrect a party member and rest instead of going to a temple to heal yourself.
I was thinking on how to make this aspect of the game / world a little bit better and i came up with the following ideas.
Let's make a religion system, which is not characterized by the act of *worship*, i.e. the undermining of your own self-respect in order to gain the favor of some