Another consideration in the mix is the ability of the crew to view FMA annunciations on the PFD at high/low pitch angles.
A contributing factor cited in the 1994 A330 test flight accident was that the PFD "declutters" the a portion of the FMA annunciations at high pitch angles to increase the viewable attitude sphere. In the A330 accident this led to the crew not determining that the aircraft was in ALT*.
I am still prowling through the FCOM to find the references to this and whether this was corrected as a result of the 1994 accident, but haven't found it yet.
If the FMA was "decluttered" then important information about pitch trim etc. may not have been available.