How about additional sidestick aileron central detent force when large backstick forces applied. When captain is PF. go-around backstick gives tendancy to roll right and when co-pilot is PF, go-around gives tendancy to roll left.
Sitting in a chair practicing pulling straight back is great idea, but when the pressure is on, all that practice is limited advantage.
How about FMGC recognising that airways have limited lateral dimensions? Try a left turn ar ABBAS on way to Damascus (just less than 90 degree turn) with a strong southerly. FMGC will command an early left turn (with limited bank angle) resulting in exiting the airway in the turn. Pilot intervention is required to remain within the airway, ie making a compulsory fly over point about 6 miles short of ABBAS that will result in a higher angle of bank that will keep the aircraft inside the airway. Alternatively go to HDG mode until close to ABBAS. Such additional considerations by crew should be unnecessarry on a relatively modern aircraft.
FMGC recognises time strangely. Even at 59 seconds past a particular minute, FMGC does not take account of any of the extra 59 seconds. ATC asks for an ETA and the FMGC could be up to 59 seconds late. Obviously the program was written by a computer nerd who was not a pilot and who could not think enough inside the square to do it to the nearest minute!