Serenity is a feat from Dragon Compendium that allowed a Paladin to change their Cha based powers such as Smite Evil, Lay on Hands, etc to Wis.
Now I am curious how well this would make a Paladin gestalt up with a Warpriest?
Adding Wis to all saves (A second time to Will)
I was also considering how well the Sacredfist gestalted up with the Enlightened Paladin (SRD name) being both are unarmed variants.