Airbus 320 Gear/Flap sequence
Until a few years ago it was standard on Airbus 320 family to call for Gear down, flaps 3" as consecutive actions following each other immideately (similar to the 737's "Gear down flap 15).
Sometime ago the SOPs where written to the effect that one has to wait for the gear's 3 greens to appear before one can call for for further flaps.
Is this just a cosmetic change or is there something technical about it, like load on hydraulics, for example?