As a native Portuguese speaker, I don't have a need for umlauts, but do need easy access to the tilde, acute, grave, and circumflex. English is the odd one out,

As a native Portuguese speaker, I don't have a need for umlauts, but do need easy access to the tilde, acute, grave, and circumflex. English is the odd one out, because it's the least common denominator in terms of the characters you need.