I'm making a cleric villain for my game and I had a question about determining the save DC for the domain abilities. As an example, he gets Aura of Madness (Su) which effects everyone within 30ft with confusion if they fail a will save. Confusion isn't normally a Cleric spell, and depending on where you get it, it has a different spell level. So should I assume Wizard 4, and give it a DC of 14 + Wis? Some clarification on this sort of thing will be needed in the final rules. I apologize if it exits somewhere and I missed it, but it wasn't mentioned under Cleric or under Domains. I'd put the DC's in the abilities themselves, just to make you not have to hunt.
Those special abilities use Charisma, not Wisdom. Otherwise, I believe in those cases where you don't have a cleric level, you use the lowest level the spell provides.
I thought it stated that saves from the domain abilties (but not bonus spells)were DC=1/2 caster level + CHA bonus
EDIT: My mistake, it must have changed in the beta.
I would go with the lowest level that it is available. Potions and other items are worked out that way.