Maybe but even if that's the case, you've now got just plain and colored vs before you'd have plain, color A, color B, color C if you go beyond just async as th

Maybe but even if that's the case, you've now got just plain and colored vs before you'd have plain, color A, color B, color C if you go beyond just async as the only other color (e.g. whether you're accepting something by reference or value, whether it's a mutable reference, whether or not the function is compile-time, etc etc etc). Still seems better to me if you collapse colors >= 1 into a single language system.