Documentation

I've been wanting to try and volunteer to help in Documentation/ for almost 10 years. That's slightly depressing in itself. Now that the system interfaces are thoroughly covered by Michael Kerrisk & Co. through the manpages, is there any prevailing opinion on what should happen to the docs directory, should anyone dedicate time to the task?

David
(once upon a time, a youth who found it therepeutic to sit up all night reformatting "t-philes" :))