So you found the pitch up managable if full throttle was applied at stick shaker. Did your autopilot run to extreme trim like that reached by Safta in his sim:
http://www.pprune.org/rumours-news/3...ml#post4770070
Do you think there should be a threshold of trim where the autopilot warns that g/a thrust would result in extreme pitchup? The autopilot would seem to have the independent informatiion necessary.
This plus the left alt dependency and second retard of the auto throttle would seem to be the lessons learned about the automation.