Machinbird - yes, let's put even more electronics and gizmos in the loop to go wrong.
Look! We can have a whole extra page of ECAMS, bells, whoops and God knows what. What gums and I and a few others want to see is a stick that just moves the ailerons, and pilots who can use it..
BOAC, What was suggested would allow the 'Bus to soldier on without getting worse than Alt1 law, without the need to seize the stick firmly, without any great excitement except quieting all the bells and whistles.
It is not a complex thing to generate once the basic calibrations are done in the design phase.
There is much to be said for allowing sleeping dogs to lie quietly. If the aircraft was out of balance laterally, the computer would handle it just the way it had moments before the AP disconnect. If turbulent, the wings would be stabilized. The only difference is that the PF would have to tell the machine where to go and to set the power since the Flight management system wouldn't be doing that for a while.
The next reversion down from Alt 1 would then be Direct law.