The only real changes I think you can implement in the prot pally module.
There is a talent that brings the pally back to I think 30% HP when he's hit with a killing blow, but then the damage reduction component of the new Ardent Defender is gone.
Vindication talent in ret tree auto gives 'demo shout' to the target. The AP reduction is 574.
Ardent Defender change:
BEFORE: all damage while UNDER 35% HP was reduced by 30%. Example --> max HP is 100,000
Currently at 40,000, takes 40k hit with no talent mitigation, dead.
Currently at 30,000, takes 40k hit, left with 2k HP because the hit is reduced by 30%.
NOW: All damage taken beyond/below 35% HP is reduced by 30%. Example --> max HP is 100,000
Currently at 40,000, takes 40k hit, 5k unmitigated, but 35k takes 30% reduction from the talent. Left with 10.5k HP.