Development of Creative Commons licenses

["Rhett Creighton" <rhett AT creighton.com>]

I am interested in a license that allows the copyright owner to decrease term of a copyright, while maintaining full copyright otherwise.  For example, someone may decide that he doesn’t need life+75 years and is happy with life+50 years.  Such a license would allow him to donate 25 years copyright ownership (plus any future extensions) to the public.  I believe that in addition to practical use, such a license will help raise awareness of the copyright extension problem.