" I still liked the old Specialty Priest concept, so I House Ruled Turn Undead as a Divine Granted Ability (something like a Feat/Class Special Ability/Domain Ability for Priests only) that only certain deities provided. I also use custom Sphere-of-Influence-based spell-lists for each priesthood, but that's a different matter.
Right now in my game there is a Priest of the Luck Goddess who does not turn undead. Neither could the Priest of the Goddess of Night nor the Goddess of Magic. However, the Priest of the Sun God hated undead and turned them with added ferocity. So could the God of the Dead.
I think Turn Undead needs to be an optional Cleric ability that is chosen from a list of options that help tailor divine Classes to their patron deity. It could easily be an option in the Death (Command/Rebuke), Destruction (Turn/Destroy), Evil (CR), Glory (TD), Good (TD), Healing (TD) and Sun (TD) Domains.
Not every Cleric or Paladin should automatically have it."
I just want to add an AMEN to this thought.
When a player picks the deity it should be tied to domains and daily abilities that seem to fit the theme. Turn Undead doesnt need to be a universal ability for all clerics.