Another very interesting post here about another solution that might be offered by F(x)tec themselves: long press on letter opens a pop-up with special characters.

I personnaly prefer a true US-intl layout, with remapped keys and dead keys (hopefully sticky), but their solution would be good for many non-nerdy users, and would make the fixed hardware layouts a lesser issue for people speaking other languages.

Really hope US-intl with dead keys *and* a pop-up solution can both work in Sailfish.