Since there are 2 X 777 and shortly 1 X 330 daily, it's not hard to see that there is a demand for the services out of SA and if they can pick up some domestic on the way..............
It's only the extra two flights a week that starts in November that will be operated by A330, all other 18 flights will be 777-300ER. From February when the 21st flight starts, then all will be 773ER.
If they believe they can do it, so let them be, rather have EK as SA's 'national airline' than an airline which cuts back routes more than what they start new ones! In that sense we'll have a few new destinations soon...Venice, Toronto, Houston, Ahmedabad...