I don't think being a standard is the problem. The general loss of interest in the language was the problem. If it had continued to gain or maintain interest we might've had a later revision of the standard. Other standardized languages get revised regularly, hell even Ada, Cobol, and Fortran receive updates at least once a decade.
The current standard library is a bit limiting and there are a bunch of good ideas that it could borrow from Clojure (literals? Anyone?)