Given the recent discussions around co-routines in Rust, even if everything has been said, there's still a wealth of stuff in this space, and figuring out what makes sense for a given language is a lot of work, regardless if it's been in some paper somewhere already or not.
I agree. The interaction of features within a particular language requires a lot of thought. However this particular article (at least how I read it) was talking in generalities, and wasn't tied to a particular language.
