Talk of scrapping this Airbus is surely premature. I cannot imagine that the designers had not taken into account the possibility of a wing skin penetration requiring repair at an outport. Unless there is severe structural damage, other repairs should be achievable, if somewhat time consuming.
A ferry flight could go over water almost all the way - Malacca Straits, South of Sri Lanka, Red Sea then along the Mediterranean to Toulouse. I am sure that the Airbus bosses will be burning the midnight oil to get that jet back to the factory, whatever it takes.