"Strong Defense: While wielding a shield in Sacred Defense, you gain a +2/+4/+6 Sacred bonus to Strength."
You're talking about saving AP on stuff that you had to take before BUT the DoS Prestige used to give you massive benefits at 6,12 and 18
NOW you have to take all those benefits separately - They add up to a Lot of AP!
Improved Sacred Defense = 9 Ranks
Greater Sacred Defense = 9 Ranks
some of these may be 2ap per rank.
This is a Lot of AP to spend that we didn't have to previously!