Well, nr 5 of the Airbus operational golden rules says: Know your FMA at all times.
I'd like to try an Airbus one day, but never having flown one, your post inspired me to look up the Airbus golden rules. Eight in all.
My instructor taught me, and I taught my students - aviate, navigate, communicate. If you know what you're doing, the rest takes care of itself. Leave it to Airbus to complicate something simple.