Remove +healing modifiers for each state, buff overall healing to compensate, make all three holy words available regardless of state. And for the love of God do something interesting with Holy Word: Sanctuary; perhaps change it to a 30 second to 1 minute cooldown increasing all healing done to players within the sanctuary by 10%, 10 second duration.
Causes your single-target healing spells to refresh the duration of Renew on the target and grants your Holy Word: Serenity ability an additional effect.
Additional effect: grants 100% spell haste for your next spell following Holy Word: Serenity.
Reduces the cooldown of Circle of Healing by 4 seconds and grants your Holy Word: Sanctuary an additional effect.
Additional effect: 50% of overhealing on players within the sanctuary will be redistrubted to up to 5 nearby injured party or raid members.
Increases the damage of your shadow and holy spells by 50%, reduces the mana cost of Smite and Holy Fire by 90%, and grants your Holy Word: Chastise ability an additional effect.
Additional effect: increases the damage of your next spell following Holy Word: Chastise by 50%.