A little surprised to hear that from you Centaurus. From reading your other posts I understand your a proponent of competence and manual handling skills. So how are FOs supposed to obtain that competence unless they're allowed to "experiment" a little within limits. One of the most annoying things is when the captain puts the hand on the flap lever indicating it's time for flaps, despite your best intuition. Later to realize you have to drag yourself forward below the profile. That's essentially what the OP is asking.