Bergerie1,
Along with your comment about training, I am inclined to agree that a sidestick shaker (wired in parallel with the STALL STALL warning) can only provide an improvement to these scenarios.
If there is a phenomenon causing blind-fear-pull-up, then maybe this is the slap round the chops that might save the day.
Recent A320 deliveries have come with a new sidestick design (with a cheaper feel to it - no inertia damping, just springs) so I am sure another re-design can't be impossible. Maybe an exchange program with retrofit?