Talking with some people on the Paizo forums and this come up. I think requiring the previous feat will really help make some healers into extraordinary battlefield leaders!
Radiant protection-Feat-Requires Efficient Healing-any creature that is the target of one of your healing effects receives a +2 Holy bonus to AC. This bonus applied to Flat Footed and touch armor classes as well. This bonus lasts until the end of your next turn.