For short haul, I see no reason for a recline. Long haul is different and one of the problems you would encounter is perception. Not how much the seat reclines - but that it CAN be reclined.
I agree that, when reclining in Y or Y+ (P.E./WT+) , one should ease back a bit and wait a minute or two - then go back more. Possibly taking three stages to get to full recline. Unfortuantely, I never sit in front of me ...
