There already IS real documentation, and it's very good. http://svnbook.red-bean.com/
The online help provided by "svn help" is also very good as a quick reference. No, I don't mean documentation of svn (I assumed it had a manual ...), I mean a replacement for the information currently on gcc.gnu.org giving information on what to do with cvs. That's where all the discussions about various methods should be.