Cat A Push-button
jeepys
all the Cat A procedures require the pilot to look inside and only the PFD because everything you need is there. With the Cat A button the pilot work load is significantly reduced and the procedure has been prooved to be more consistent.
There is no way that you can carry out a Cat A procedure without monitoring your primary instruments (this is with any helicopter or fixed wing).
If you have to reject, this button does not add anything to the already existing procedure and you can afford to look outside paying attention only to the NR.
Your spacial awarness is never lost.