Even though the GS was off the air, they could had flown it in LOC/VNAV. Same level of safety. Once they disconnected the A/THR, GS or not, they seem to have crossed the line of their capabilities. (Any PPL holder could manage this).
What will management do to prevent re-occurence? (they have to do something, right?): no more visual approach, circling, NPAs, disconnecting AP above minimum, disengaging A/THR at all.
Can expect SFO to change their speed control to 160 kts to 4nm and provide ILS to every non-US long-haul flights.
As for the root cause (inability to hand fly a visual approach), nothing will be done!