I think that would be a good idea, but probably a lot of people wouldn't.
Yeah it has been mentioned but I am of the mind that it wouldn't. Once it happens, it is always expected to happen and then we are moving in the wrong direction for decentralization.
By the way, I try to add Z for Americans and S for Europeans but sometimes I mess up and mix or forget. Does it effect your reading ability at all to see English spellings? This is just out of curiosity as you are likely someone who might have considered this at some point but likely don't care either way now.
No rush answering, I am off to bed :)
Half the people I talk to are Canadian, so I'm bilingual in English.