Edit: I realize you're likely responding to my first post, oh which my opinion has changed a bit due to some of these responses. At this point I'm leaning more towards they just need to buff PLD's damage taken compared to GLA. I still think Outmaneuver should be fixed, and adding an MP recovery effect to Spirits Within instead of damage boost would be nice, but the lack of any gains in terms of damage mitigation for PLD just puts GLA and WAR ahead of it right now.
I really just think PLD needs increased Block rates and Outmaneuver's MP recovery boosted, like you suggested. From what I understand Spirits Within does a lot of damage (we didn't get many chances to try it out this weekend unfortunately) so it is likely how you are meant to hold hate when your MP is low since damage gives more enmity than healing does. Possibly its recast time could be reduced, but boosting block rates and outmaneuver would combat most of the problems with PLD.

Then again there may just a difference in playstyle required by PLD that we just aren't getting.