what is/could be D's killer app/features?

[mee6]

On Saturday, 4 June 2022 at 09:13:22 UTC, Ola Fosheim Grøstad 
wrote:
> D's killer feature should be simple looking source code.
>
> That is the easiest path to staying relevant in comparison to 
> C++ and Rust.
>
> Unfortunately this perspective seems to have been lost 
> completely.

If D syntax alone was a "killer feature", it would sell itself 
and would just be more popular than it is. Unfortunately D syntax 
would only appeal to people that use C++ but still people just 
use C++ instead.