What Would the Hierophant Have to Give Up To Gain Full Divine Spell Progression?

[Deset Gled]

But I want to make sure that any resulting compromise is well balanced with the rest of the party.

What's the rest of the party?

 

[The_Universe]

so far (bear in mind that they're level 5 - a long way from Hierophant territory), there's a mage, a rogue, a monk, a scout, and a swashbuckler.

 

[Deset Gled]

so far (bear in mind that they're level 5 - a long way from Hierophant territory), there's a mage, a rogue, a monk, a scout, and a swashbuckler.

Noting that, I would highly recommend that your cleric not take any PrC that does not advance turning. You have three classes that are going to be pushed to the back line when fighting creatures immune to crits, so it will probably become a key ability for fighting off the undead mooks.

Not a direct answer to the question, but that's my $.02.