IronPython and dynamic lanauage on .net

IronPython: proved .net for Python, proved Python for .net
A nice dynamic language integrated on the platform of .net is MY DREAM for a long time. At the first time, I believe that .net is a EXCELLENT platform for almost aspect except the most underlying operation. Of course all dynamic language will find it is true that .net platform will be their best host.
Although IronPython have gained very good performance, there is a wide gap between my imagination of dynamic language and reality.
1. I think CSharpDynamic will be the best dynamic lang with only a little modification. It should not any grammar on the c#, and we should not add too many keywords to c#. I think why VB is so worse greatly depend on the so namy existance of Keywords.
2. I think CSharpDynamic should can call all the Framework's API directly, and it can access most of clr features. It should not have its any funciton ,any class, any framework of its own. It should be built on entirely on the platform of .net.