Coming back to 447 what would have helped and has helped in some other such events is sensible piloting and following proper procedures. But some how that is not important to you.
Because I don't see a word from you about the procedure 447 crew followed.
Not in this case, the auto trim would have trimmed hands free from the stick.
If 2.5 degrees pitch and something like 80% N1 was set why would the aircraft trim full up? Airbus trims for the flight path if you point the nose up and keep the stick back sure it will do what you asked for. The aircraft was not left hands free at all. TOGA was selected which is not vastly different at 350 but never the less FBW resists the pitch up it only trimmed back because pilot pulled the stick back and kept it there. Perpignan and AF447 are what not to do examples and if you support these operating styles surely you are demanding pilot proof aircrafts.