I am a bit puzzled about the concern about AoA indication. I presume maintaining what you guys call 'pitch and power' would probably have saved the day. If the climb was intentional then that's a step in the dark and the inability to adjust thrust to keep air speed up was the issue (not easy without airspeed reports). If the climb wasn't intentional but went unnoticed, seems unlikely that additional information on AoA would have been recognised. In the stall, if it wasn't recognised as a stal,l then what chance an AoA readout would have been noticed/acted upon. If it was recognised as a stall the -40 degree or so readout would have been irrelevant.
On another point, if the systems had some remaining degree of automation, given a pilot input of nose down, would it be so difficult for the system to recognise the intent, recognise the THS setting, and help him out by unfixing and adjusting it ? Seems a bit perverse to freeze the setting and not revisit it in the face of sustained pilot command.