I agree with many of the original poster's ideas for PLD tweaks, just based off the fact that a lot of the abilities that he brought up are fairly worthless or are too restrictive to be utilized in most situations.

I would also like to add to the list making Spirits Within not be affected by Shield Oath's damage reduction so that it is more inline with Inner Beast and Provoke needs a boost so it is more "top of the hate list plus some extra" so that you have a little more buffer.

I don't see it happening but better cross class skills for PLD would be awesome as so many aren't really useful in a fight (skull sunder, mercy stroke, fracture, raise), have a cast-time associated with them which doesn't work so great for tanking or melee (cure, stoneskin), or are trounced by the White Mage in the party casting them (protect).