The HP and Healing bonus with be about equal to Shield Oath. So that puts Inner Beast to be compared against the other PLD CDs. Isn't the buff 30% for 6 seconds? Cant remember. You'll also be getting a self heal of 400-1000 depending on buffs and RNG. But chances are you will be topped off before a big hit.
Can see way more War\Pld groups forming with the changes.