I don't understand this comment. .NET team isn't one man shop, there's various teams working on various issues. Should JIT team stop working until CLR gets "more expressive type system"?
Not to mention that .NET CLR features are mostly driven by CLR languages. While there's couple of things that CLR can do what C# can't do, you can bet that CLR will get new features when they're introduced in new C#.
You're correct, and my comment isn't constructive. It's just that they added features for CLR2, and then it's stayed there. C#'s been even more stagnant; they haven't even gotten around to polishing the edges from the LINQ push.
Not to mention that .NET CLR features are mostly driven by CLR languages. While there's couple of things that CLR can do what C# can't do, you can bet that CLR will get new features when they're introduced in new C#.
And yes, SSE access would be nice.