For any character with turn undead, allow taking individual feats with cha+ or wis+ or both cha+ and wis+ requirements that expand Turning
-Turn Vermin
-Turn Beasts
-Turn Magica Beasts
-Turn Aberrations
-Turn Animals
-Turn Shapechangers
-Turn Oozes and slimes
-Turn Elementals
-Turn Constructs
The feat is wasted if you have a domain that already provides turning for the racial type.
No outsiders because Planar Turning already exists.
Additionally, add holy amulets / Staves / religious icons like incenser that provide one or more of these feats as an option to wield.
EDIT: Come to think about it, perhaps the feats shouldn't be available to characters on level up but only though items that grant the feat to make them feel more special.