Clojure "the language" is certainly ossified, but Clojure "the ecosystem" is doing very, very well.
Stability is extremely valuable. A lack of change to the core language over extended periods of time can be a very good thing, especially if certain changes would break existing code. Rich has made it clear that he is indeed targeting this kind of stability.
Again, I would be very interested to hear what specific changes you think need to be made to 'Clojure "the language"'.
So... you meant 'ossified' in a good way?? If so, I guess I would have used a different term that didn't have such a negative connotation.