I think what apple landed on—i.e. the ISO 639-1 2-character language code represented as an icon—is just about as optimal as you could get. (I supposed also sup

I think what apple landed on—i.e. the ISO 639-1 2-character language code represented as an icon—is just about as optimal as you could get. (I supposed also supporting 3-character ISO 639-2 codes would be even better.) But finding any flag to represent English alone is a nightmare.