Based on earlier posts about stable approach procedures, why not add an EGPWS mode offering a "GO AROUND" alert when the following conditions are met:
I believe AIRBUS have something in the pipeline to alert to an unstabilised approach. At the moment there is an arc displayed on the ND as a guide to energy management in the descent, if the arc crosses the runway threshold you are fine, if it's miles beyond that then it's time for speed brakes.