There are several examples of frameworks that attempt to de-mangle a Java class name into a Clojure symbol (including namespace); this is useful for writing out an improved, Clojure-specific stack trace when reporting exceptions.
Existing libraries are based on regular expression matching and guesswork, and can occasionally give incorrect results, such as when a namespace or function name actually contains an underscore.
It would be helpful for authors of such frameworks if Clojure would expose a static final field on such classes with the proper name that should appear in the stack trace; libraries would then be able to use reflection to access the proper name of the field, without the current guesswork.
I would suggest CLOJURE_SOURCE_NAME as a reasonable name for such a field.
Other Clojure class constructs beyond functions, such as reified types and protocol implementations, would also benefit, though it is less obvious what exact string value would properly and unambiguously identify what purpose the class plays.