[DrScientist]

I'd agree - and I'm not sure it's even possible to have a language with every feature.

Languages are about telling computers[1] what to do - at the right level of abstraction for the task in hand.

As far as I can see ( as an outsider ) is the trick in language design, is not the programmer ergonomics per se - but creating a set of abstractions ( expressed as language features ) that can then be converted into machine code in a way that's some best combination of reliable, safe and fast.

[1] Not directly, but indirectly via compilers or interpreters.