First of all, Rust is quite a different language to Go, so I wouldn't consider it a drop-in replacement. But this also means, that those, who don't like too man

First of all, Rust is quite a different language to Go, so I wouldn't consider it a drop-in replacement. But this also means, that those, who don't like too many features of Go might really be happier with Rust. But adding features to Go by popular demand would make it a new language and a new ecosystem. So if that is what people want, they should go ahead with it. Even if it just is an engineering prototype, which showcases features that Google should add to the Go main line.