With the level of automation already available on current aircraft (reliable Autopilots, Auto Thrust, AutoLand etc) we're already more than half way there.
Self healing electronics are now in development.
Sometimes I wonder - why an ECAM action message at all? Why not an automatic system action and follow-up ECAM completed advisory?
I'd agree it's not "if" but "when", but I'd ask how far off are we having all runways and all airports supporting autoland on a 24/7/365 basis to allow fully automated operation?
It would also be interesting to see a fully automated system action for the likes of a "Fuel Imbalance Message".........