That little "hack" only works on the older style FCU panels. It does not work on the newer ones with the longer speed knob and darker green switch lights.
As far as I know there are very few EFIS display options on the Airbus, don't think you can choose track up instead of heading for instance. Display of QNH/Inches is switchable by the pilot and I think the crossbar flight directors are the only option.
There are a few autoflight options that are pin selectable such as letting the G/S engage before the LOC has captured. Disabled on our aircraft but some operators have it enabled.