Speaking of Air Mauritius & it's A343E I think they made a real poo poo by buying" closing down sales "A343Es , even Airbus admitted it was a relief for them getting rid of those last few examples .
They are so obsessed by ETOPS that they cant see more than a few years ahead . If the buy is just bridging the gap till the 787 it's expensive, otherwise it's just plain stupid !
Air Mauritius ETOPS problem arises on the Africa - Australia sector where it is critical . Also with Diego Garcia touchy about their airspace at the moment life is not easy. In southern winter jetstreams of up to 200kts HW are common when flying westwards. we have been known to fly as low as FL250 to avoid it.