Yeah, the "novel" bit is about integrating all those aspects into one language.

And trust me, such a language that captures enough mindshare is absolutely needed. People thought Rust was going to be it, but it got taken over by the idea of it being the next C++.

IF LLMs are what you make them out to be, it shouldn't have been long before we saw serious attempts at such languages, but I suspect LLMs are of barely any help here beyond some basic implementation tasks.