Marginalised and abused children are often overlooked even today, and risk becoming marginalised and abused adults who may never receive acknowledgment or respect for the immense physical and emotional burden they carry from childhood or indeed have their full potential realised.
Neurotic identity crises come when our defense mechanisms have been too successful and we're encapsulated in the fortress we have constructed with nothing to refresh us in our solitary confinement. So we play the old movies with their stale fears and their unrealistic hopes until we become bored enough to risk disarmament and engagement.
Leaving out appraisal also would render the biological description of the phenomena of emotion vulnerable to the caricature that emotions without an appraisal phase are meaningless events. It would be more difficult to see how beautiful and amazingly intelligent emotions can be, and how powerfully they can solve problems for us.