That's true, and personally, I hope it continues. However, there are some significant new features that have already been approved that are being worked on righ

That's true, and personally, I hope it continues. However, there are some significant new features that have already been approved that are being worked on right now. e.g., Specialization, const generics and generic associated types. Each of these is somewhat significant in that they might alter how one might write some kinds of code today. But generally, they open new doors by adding more expressiveness to the type system.