What will be their proposals to remedy this ... if any
They...Airbus... offered the BUSS option even before AF447.
But it will never be a standard for the A330 if not mandated so by the autorities.
AFAK it is standard on A380 and will be on A350.
Recently I heard about upcoming 'firmware' updates (Don't have it on paper yet):
The ECAM announcement of transition to another law will be accompanied with a brief statement for the reason why the transition took place.
The PDF message "USE MAN PITCH TRIM" will show up always when automatic trim is not available.
(e.g. Abnormal Attitude ?)