repo-janitor configurations

All:

There are a few approaches to repo-janitor that I'd like to get a 
consensus on.  First, one might rsync/mirror the remote repository 
locally and then run repo-janitor to set up the web pages.  Or, second, 
one might configure repo-janitor to dig up packages directly from the 
remote repository.  Which one do you use?  What are the advantages?

Also, instead of reinventing the wheel, can we bring together a solid 
core of repo-janitor configurations that include the major 
repositories.  I'd like to see: atrpms.xml, kde-redhat.xml, dag.xml, 
freshrpms.xml, os.xml and more.  Optimally, the configuration should 
layout the directory structure exactly the way the original repo has 
it; but, slight modifications may be accepted such as the os.xml.  To 
be nice, a set of mirrors should be included or maybe a comment such as 
<!-- Insert closest mirror here -->.

Thoughts?

-- 
-jeff