i don t see language issue for the A330 incident , decision making isn t a language mecanism and understanding of ETOPS , do you remember the EY ETOPS ground course?i flew with some new joiners fluent in english but after the ground phase they thought ETOPS ops was just for Atlantic flights
anyway i am agree with you for assess the english level but our main problem isn t this one for the moment.
just my 2 cts
regards
sv4l