AST shields to NOT need to be buffed up. that means that SCH shields have to be buffed up again. I don't play SCH, frankly i suck at it, but a Shield buff for the "Famed" Hybrid healer is not going to make things better, but we'll have another 3.X series patch of one healer being left out because of that.
As Kabzy said, WHMs didn't get hit with the nerf stick too bad (PI's Potencies...well...it's situationally used anyway in non-savage content, i guess?) but SCHs still got a lot of the bad end. I don't see this as anything good, just like some of the other AST "suggestions" people have given that all boil down to "Make their shields stronger!"